關於 see you again心得 ，我們在網路上蒐集到這些相關的討論、資訊與評價

又係星期一！記得今晚睇 #晚吹 - #有酒今晚吹 第59集 ViuTV 99台 23:30-00:00！
今集嘉賓有我邀請嘅 #邦瀚斯拍賣行 葡萄酒及烈酒部亞洲區總監林安泰（Daniel Lam）🥳🥂🍷🥃! 仲有我詩詩 #品酒師 同 #強尼 及 #娟姐 一齊約定你! 開定支咩酒一齊睇呀？今晚同大家分享 #拍賣葡萄酒及烈酒 心得🥳，又試 #罕有葡萄酒 及 #罕有威士忌 #BowmoreBicentenary 😍😍🥃！仲有配 城中熱話 MIAN 紅棉 嘅中菜美食😋😋！#Yummy! 記得支持下呀！#Cheers!
It’s Monday again! It’s the 59th episode of “Night Talk - Chit Chat Drink” on ViuTV Channel 99 tonight! We’ll have my invited guest Bonhams Hong Kong Auction House Wine & Spirits Director Daniel Lam as the guest! 🍷🥂🥃🎉🥳 U’ll also see me as a wine & spirits specialist together with Johnny Hui & Florica Lin sipping wine & spirits together with our guest! What wine/spirits will you open tonight to watch it together? I will talk about #WineandSpiritsAuction tonight ! 🍷🥂🥃🥳🎉I’ll be sipping. Some rare wines & rare whisky Bowmore Single Malt WhiskyBicentenary 😍😍🥃 tonite! I’ll be pairing it with Chinese delicacies from talk of the town #MianHongKong 😋😋! please support! Cheers!

靚衫贊助/costume sponsor: Iris & Ink from THE OUTNET.COM

#wine #spirits #talkshow #nighttalk #tvshow #viutv #ccwinevoyage #詩詩酒樂園 #Foodandwine 公啟行 Kung Kai Hong 強尼 @娟姐 Florica Lin #IrisandInk #TheOutnet Weingut Rappenhof Domaine Leflaive #cheers #紅棉 Bonhams

📜 [專欄新文章] Uniswap v3 Features Explained in Depth

✍️ 田少谷 Shao

📥 歡迎投稿： https://medium.com/taipei-ethereum-meetup #徵技術分享文 #使用心得 #教學文 #medium

Once again the game-changing DEX 🦄 👑

Image source: https://uniswap.org/blog/uniswap-v3/

Outline

0. Intro1. Uniswap & AMM recap2. Ticks 3. Concentrated liquidity4. Range orders: reversible limit orders5. Impacts of v36. Conclusion

0. Intro

The announcement of Uniswap v3 is no doubt one of the most exciting news in the DeFi place recently 🔥🔥🔥

While most have talked about the impact v3 can potentially bring on the market, seldom explain the delicate implementation techniques to realize all those amazing features, such as concentrated liquidity, limit-order-like range orders, etc.

Since I’ve covered Uniswap v1 & v2 (if you happen to know Mandarin, here are v1 & v2), there’s no reason for me to not cover v3 as well ✅

Thus, this article aims to guide readers through Uniswap v3, based on their official whitepaper and examples made on the announcement page. However, one needs not to be an engineer, as not many codes are involved, nor a math major, as the math involved is definitely taught in your high school, to fully understand the following content 😊😊😊

If you really make it through but still don’t get shxt, feedbacks are welcomed! 🙏

There should be another article focusing on the codebase, so stay tuned and let’s get started with some background noise!

1. Uniswap & AMM recap

Before diving in, we have to first recap the uniqueness of Uniswap and compare it to traditional order book exchanges.

Uniswap v1 & v2 are a kind of AMMs (automated market marker) that follow the constant product equation x * y = k, with x & y stand for the amount of two tokens X and Y in a pool and k as a constant.

Comparing to order book exchanges, AMMs, such as the previous versions of Uniswap, offer quite a distinct user experience:

AMMs have pricing functions that offer the price for the two tokens, which make their users always price takers, while users of order book exchanges can be both makers or takers.

Uniswap as well as most AMMs have infinite liquidity¹, while order book exchanges don’t. The liquidity of Uniswap v1 & v2 is provided throughout the price range [0,∞]².

Uniswap as well as most AMMs have price slippage³ and it’s due to the pricing function, while there isn’t always price slippage on order book exchanges as long as an order is fulfilled within one tick.

In an order book, each price (whether in green or red) is a tick. Image source: https://ftx.com/trade/BTC-PERP

¹ though the price gets worse over time; AMM of constant sum such as mStable does not have infinite liquidity

² the range is in fact [-∞,∞], while a price in most cases won’t be negative

³ AMM of constant sum does not have price slippage

2. Tick

The whole innovation of Uniswap v3 starts from ticks.

For those unfamiliar with what is a tick:

Source: https://www.investopedia.com/terms/t/tick.asp

By slicing the price range [0,∞] into numerous granular ticks, trading on v3 is highly similar to trading on order book exchanges, with only three differences:

The price range of each tick is predefined by the system instead of being proposed by users.

Trades that happen within a tick still follows the pricing function of the AMM, while the equation has to be updated once the price crosses the tick.

Orders can be executed with any price within the price range, instead of being fulfilled at the same one price on order book exchanges.

With the tick design, Uniswap v3 possesses most of the merits of both AMM and an order book exchange! 💯💯💯

So, how is the price range of a tick decided?

This question is actually somewhat related to the tick explanation above: the minimum tick size for stocks trading above 1$ is one cent.

The underlying meaning of a tick size traditionally being one cent is that one cent (1% of 1$) is the basis point of price changes between ticks, ex: 1.02 — 1.01 = 0.1.

Uniswap v3 employs a similar idea: compared to the previous/next price, the price change should always be 0.01% = 1 basis point.

However, notice the difference is that in the traditional basis point, the price change is defined with subtraction, while here in Uniswap it’s division.

This is how price ranges of ticks are decided⁴:

Image source: https://uniswap.org/whitepaper-v3.pdf

With the above equation, the tick/price range can be recorded in the index form [i, i+1], instead of some crazy numbers such as 1.0001¹⁰⁰ = 1.0100496621.

As each price is the multiplication of 1.0001 of the previous price, the price change is always 1.0001 — 1 = 0.0001 = 0.01%.

For example, when i=1, p(1) = 1.0001; when i=2, p(2) = 1.00020001.

p(2) / p(1) = 1.00020001 / 1.0001 = 1.0001

See the connection between the traditional basis point 1 cent (=1% of 1$) and Uniswap v3’s basis point 0.01%?

Image source: https://tenor.com/view/coin-master-cool-gif-19748052

But sir, are prices really granular enough? There are many shitcoins with prices less than 0.000001$. Will such prices be covered as well?

Price range: max & min

To know if an extremely small price is covered or not, we have to figure out the max & min price range of v3 by looking into the spec: there is a int24 tick state variable in UniswapV3Pool.sol.

Image source: https://uniswap.org/whitepaper-v3.pdf

The reason for a signed integer int instead of an uint is that negative power represents prices less than 1 but greater than 0.

24 bits can cover the range between 1.0001 ^ (2²³ — 1) and 1.0001 ^ -(2)²³. Even Google cannot calculate such numbers, so allow me to offer smaller values to have a rough idea of the whole price range:

1.0001 ^ (2¹⁸) = 242,214,459,604.341

1.0001 ^ -(2¹⁷) = 0.000002031888943

I think it’s safe to say that with a int24 the range can cover > 99.99% of the prices of all assets in the universe 👌

⁴ For implementation concern, however, a square root is added to both sides of the equation.

How about finding out which tick does a price belong to?

Tick index from price

The answer to this question is rather easy, as we know that p(i) = 1.0001^i, simply takes a log with base 1.0001 on both sides of the equation⁴:

Image source: https://www.codecogs.com/latex/eqneditor.php

Let’s try this out, say we wanna find out the tick index of 1000000.

Image source: https://ncalculators.com/number-conversion/log-logarithm-calculator.htm

Now, 1.0001¹³⁸¹⁶² = 999,998.678087146. Voila!

⁵ This formula is also slightly modified to fit the real implementation usage.

3. Concentrated liquidity

Now that we know how ticks and price ranges are decided, let’s talk about how orders are executed in a tick, what is concentrated liquidity and how it enables v3 to compete with stablecoin-specialized DEXs (decentralized exchange), such as Curve, by improving the capital efficiency.

Concentrated liquidity means LPs (liquidity providers) can provide liquidity to any price range/tick at their wish, which causes the liquidity to be imbalanced in ticks.

As each tick has a different liquidity depth, the corresponding pricing function x * y = k also won’t be the same!

Each tick has its own liquidity depth. Image source: https://uniswap.org/blog/uniswap-v3/

Mmm… examples are always helpful for abstract descriptions 😂

Say the original pricing function is 100(x) * 1000(y) = 100000(k), with the price of X token 1000 / 100 = 10 and we’re now in the price range [9.08, 11.08].

If the liquidity of the price range [11.08, 13.08] is the same as [9.08, 11.08], we don’t have to modify the pricing function if the price goes from 10 to 11.08, which is the boundary between two ticks.

The price of X is 1052.63 / 95 = 11.08 when the equation is 1052.63 * 95 = 100000.

However, if the liquidity of the price range [11.08, 13.08] is two times that of the current range [9.08, 11.08], balances of x and y should be doubled, which makes the equation become 2105.26 * 220 = 400000, which is (1052.63 * 2) * (110 * 2) = (100000 * 2 * 2).

We can observe the following two points from the above example:

Trades always follow the pricing function x * y = k, while once the price crosses the current price range/tick, the liquidity/equation has to be updated.

√(x * y) = √k = L is how we represent the liquidity, as I say the liquidity of x * y = 400000 is two times the liquidity of x * y = 100000, as √(400000 / 100000) = 2.

What’s more, compared to liquidity on v1 & v2 is always spread across [0,∞], liquidity on v3 can be concentrated within certain price ranges and thus results in higher capital efficiency from traders’ swapping fees!

Let’s say if I provide liquidity in the range [1200, 2800], the capital efficiency will then be 4.24x higher than v2 with the range [0,∞] 😮😮😮 There’s a capital efficiency comparison calculator, make sure to try it out!

Image source: https://uniswap.org/blog/uniswap-v3/

It’s worth noticing that the concept of concentrated liquidity was proposed and already implemented by Kyper, prior to Uniswap, which is called Automated Price Reserve in their case.⁵

⁶ Thanks to Yenwen Feng for the information.

4. Range orders: reversible limit orders

As explained in the above section, LPs of v3 can provide liquidity to any price range/tick at their wish. Depending on the current price and the targeted price range, there are three scenarios:

current price < the targeted price range

current price > the targeted price range

current price belongs to the targeted price range

The first two scenarios are called range orders. They have unique characteristics and are essentially fee-earning reversible limit orders, which will be explained later.

The last case is the exact same liquidity providing mechanism as the previous versions: LPs provide liquidity in both tokens of the same value (= amount * price).

There’s also an identical product to the case: grid trading, a very powerful investment tool for a time of consolidation. Dunno what’s grid trading? Check out Binance’s explanation on this, as this topic won’t be covered!

In fact, LPs of Uniswap v1 & v2 are grid trading with a range of [0,∞] and the entry price as the baseline.

Range orders

To understand range orders, we’d have to first revisit how price is discovered on Uniswap with the equation x * y = k, for x & y stand for the amount of two tokens X and Y and k as a constant.

The price of X compared to Y is y / x, which means how many Y one can get for 1 unit of X, and vice versa the price of Y compared to X is x / y.

For the price of X to go up, y has to increase and x decrease.

With this pricing mechanism in mind, it’s example time!

Say an LP plans to place liquidity in the price range [15.625, 17.313], higher than the current price of X 10, when 100(x) * 1000(y) = 100000(k).

The price of X is 1250 / 80 = 15.625 when the equation is 80 * 1250 = 100000.

The price of X is 1315.789 / 76 = 17.313 when the equation is 76 * 1315.789 = 100000.

If now the price of X reaches 15.625, the only way for the price of X to go even higher is to further increase y and decrease x, which means exchanging a certain amount of X for Y.

Thus, to provide liquidity in the range [15.625, 17.313], an LP needs only to prepare 80 — 76 = 4 of X. If the price exceeds 17.313, all 4 X of the LP is swapped into 1315.789 — 1250 = 65.798 Y, and then the LP has nothing more to do with the pool, as his/her liquidity is drained.

What if the price stays in the range? It’s exactly what LPs would love to see, as they can earn swapping fees for all transactions in the range! Also, the balance of X will swing between [76, 80] and the balance of Y between [1250, 1315.789].

This might not be obvious, but the example above shows an interesting insight: if the liquidity of one token is provided, only when the token becomes more valuable will it be exchanged for the less valuable one.

…wut? 🤔

Remember that if 4 X is provided within [15.625, 17.313], only when the price of X goes up from 15.625 to 17.313 is 4 X gradually swapped into Y, the less valuable one!

What if the price of X drops back immediately after reaching 17.313? As X becomes less valuable, others are going to exchange Y for X.

The below image illustrates the scenario of DAI/USDC pair with a price range of [1.001, 1.002] well: the pool is always composed entirely of one token on both sides of the tick, while in the middle 1.001499⁶ is of both tokens.

Image source: https://uniswap.org/blog/uniswap-v3/

Similarly, to provide liquidity in a price range < current price, an LP has to prepare a certain amount of Y for others to exchange Y for X within the range.

To wrap up such an interesting feature, we know that:

Only one token is required for range orders.

Only when the current price is within the range of the range order can LP earn trading fees. This is the main reason why most people believe LPs of v3 have to monitor the price more actively to maximize their income, which also means that LPs of v3 have become arbitrageurs 🤯

I will be discussing more the impacts of v3 in 5. Impacts of v3.

⁷ 1.001499988 = √(1.0001 * 1.0002) is the geometric mean of 1.0001 and 1.0002. The implication is that the geometric mean of two prices is the average execution price within the range of the two prices.

Reversible limit orders

As the example in the last section demonstrates, if there is 4 X in range [15.625, 17.313], the 4 X will be completely converted into 65.798 Y when the price goes over 17.313.

We all know that a price can stay in a wide range such as [10, 11] for quite some time, while it’s unlikely so in a narrow range such as [15.625, 15.626].

Thus, if an LP provides liquidity in [15.625, 15.626], we can expect that once the price of X goes over 15.625 and immediately also 15.626, and does not drop back, all X are then forever converted into Y.

The concept of having a targeted price and the order will be executed after the price is crossed is exactly the concept of limit orders! The only difference is that if the range of a range order is not narrow enough, it’s highly possible that the conversion of tokens will be reverted once the price falls back to the range.

As price ranges follow the equation p(i) = 1.0001 ^ i, the range can be quite narrow and a range order can thus effectively serve as a limit order:

When i = 27490, 1.0001²⁷⁴⁹⁰ = 15.6248.⁸

When i = 27491, 1.0001²⁷⁴⁹¹ = 15.6264.⁸

A range of 0.0016 is not THAT narrow but can certainly satisfy most limit order use cases!

⁸ As mentioned previously in note #4, there is a square root in the equation of the price and index, thus the numbers here are for explantion only.

5. Impacts of v3

Higher capital efficiency, LPs become arbitrageurs… as v3 has made tons of radical changes, I’d like to summarize my personal takes of the impacts of v3:

Higher capital efficiency makes one of the most frequently considered indices in DeFi: TVL, total value locked, becomes less meaningful, as 1$ on Uniswap v3 might have the same effect as 100$ or even 2000$ on v2.

The ease of spot exchanging between spot exchanges used to be a huge advantage of spot markets over derivative markets. As LPs will take up the role of arbitrageurs and arbitraging is more likely to happen on v3 itself other than between DEXs, this gap is narrowed … to what extent? No idea though.

LP strategies and the aggregation of NFT of Uniswap v3 liquidity token are becoming the blue ocean for new DeFi startups: see Visor and Lixir. In fact, this might be the turning point for both DeFi and NFT: the two main reasons of blockchain going mainstream now come to the alignment of interest: solving the $$ problem 😏😏😏

In the right venue, which means a place where transaction fees are low enough, such as Optimism, we might see Algo trading firms coming in to share the market of designing LP strategies on Uniswap v3, as I believe Algo trading is way stronger than on-chain strategies or DAO voting to add liquidity that sort of thing.

After reading this article by Parsec.finance: The Dex to Rule Them All, I cannot help but wonder: maybe there is going to be centralized crypto exchanges adopting v3’s approach. The reason is that since orders of LPs in the same tick are executed pro-rata, the endless front-running speeding-competition issue in the Algo trading world, to some degree, is… solved? 🤔

Anyway, personal opinions can be biased and seriously wrong 🙈 I’m merely throwing out a sprat to catch a whale. Having a different voice? Leave your comment down below!

6. Conclusion

That was kinda tough, isn’t it? Glad you make it through here 🥂🥂🥂

There are actually many more details and also a huge section of Oracle yet to be covered. However, since this article is more about features and targeting normal DeFi users, I’ll leave those to the next one; hope there is one 😅

If you have any doubt or find any mistake, please feel free to reach out to me and I’d try to reply AFAP!

Stay tuned and in the meantime let’s wait and see how Uniswap v3 is again pioneering the innovation of DeFi 🌟

Uniswap v3 Features Explained in Depth was originally published in Taipei Ethereum Meetup on Medium, where people are continuing the conversation by highlighting and responding to this story.

👏 歡迎轉載分享鼓掌

跟Kuan賣純素墨西哥塔克的日子❤️ #為何我選擇不吃動物 #理想與責任🔥⠀
昨天第一次跟 @wufumade 出去擺攤檔一日店長，心得就是⋯ 「愛」！⠀
從之前第一次自己買來吃，跟老闆聊聊後，我就知道，這個人跟我的頻率一樣！ ⠀
⠀
工作與夢想，生活與理想，雖然過程中都有一些現實得面對，但當你做你認為是對的事，目標不是利益而是意義！🔥 你就算累還是開心！⠀
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我們兩個都吃植物性飲食（純素Vegan ）沒有特別複雜的原因，也從來不強迫別人一定要同意或做到。但我們想透過行動分享一個生活理念：「我們所做的一切不是為了自己，而是為了比我們更大的原因：愛，意義」🌍❤️ ⠀
⠀
你知道嗎？人不用吃動物，一樣可以活很健康很快樂啊！👻🤗⠀
當然要看你嘴巴裡塞的是垃圾還是原始健康食物⋯
但我只能強調：我！非常！不！缺營養！（醫生最近測試我的血液說是他這幾年看過最猛的數字！果然，不用他說我自己知道我的活力用不完！🤣
⠀
我從開始不吃動物的產品後常被別人說「妳好可憐，好不方便，好多限制」🙈⠀
但我聽到都會笑：其實是相反的，我超自由，因為這個是我的「選擇」🦋

⠀
而我有自律去執行我最深的理念：愛環境，不傷害別人 🐥💕

而能透過吃素或其他行為做到，這個很給力啊！💪🏽⠀
選擇⋯⠀⠀
👉🏽 意識自己與大環境的連結⠀
👉🏽 對自己的行為與後果負責 ⠀
👉🏽 戒掉藉口，給自己能力去執行 ⠀
👉🏽 改變自己！再來激勵別人嘗試改變！⠀
⠀
⠀
Anyway 講那麼多⋯ 鼓勵你們從小的改變開始。一切是過程，我們不追求完美，但追求學習，追求開放，嘗試，進步！⠀
⠀
🥁 10月24-25日我應該還會再次跟 @wufumade 出去擺攤 （高雄衛武營）
🌮️ 歡迎大家追蹤 Kuan @wufumade 他平常在高雄各種市集擺攤（愛河，Ikea，碼頭等等） ⠀
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有機會我們再用最健康美味的食物分享我們的愛給你們啦！🤗🥰⠀
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Happy Monday! ⠀
Love you! 我愛你們！⠀
🌱😘 ⠀

~~~ #english ~~~

Vegan tacos with Kuan ❤️
#WhyIamHappyWithoutEatingAnimals #idealsAndResponsabilities 🔥

Yesterday, I went out with Kuan @wufumade to help sell vegan tacos, it was FUN!

The first time I bought Kuan’s food and talked to him, I knew straight away we click, we have the same frequency!
...Work, dream, life and ideals. 🦋

Both passionate and grateful for life, and while we face challenges in life like everyone, we still have so much energy and love to give.

Both of us eat a plant-based diet (vegan) for no fancy reasons, and we never force others to agree on our view or push others to become vegan. We simply believe that we can live well without animal products. 💕😊

We don’t want to cause more harm than we need to. It’s that simple. Whether it’s the animals, the environment, ourselves, or the future generation. We are all connected.

Simply put: for me eating plant based is not really about myself, it’s about something bigger. 🌍❤️🐶🐬🐛

Anyway... Everything is a process, I do not pursue perfection - BUT I strive for love, meaning and progress!

Ps: October 24-25th I’ll probably be helping out Kuan @wufumade again, at Weiwuyin kaohsiung. 😋 follow @wufumade to see his weekly location and street market updates!

Hope to see you soon!
One LOVE! 🦋❤️
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#vegan #veganfood @ 駁二藝術特區 The Pier-2 Art Center

About Chatterbox Podcast 👏Book Review👏:
主持人Elise每個月將會挑選一本書，在podcast上簡短介紹並分享心得，與聽眾一起發掘好書！

Have you ever watched "The Hunger Games" movie franchise? Or have you read any dystopian fiction? 1984 by George Orwell is one of the most classic dystopian fiction of all time.

In this episode, we're gonna dive into the world of 1984 and see what's so fascinating yet horrifying about this dystopian social science fiction.
-
Quotes mentioned:

"To know and not to know, to be conscious of complete truthfulness while telling carefully constructed lies, to hold simultaneously two opinions which canceled out, knowing them to be contradictory and believing in both of them, to use logic against logic, to repudiate morality while laying claim to it, to believe that democracy was impossible and that the Party was the guardian of democracy, to forget whatever it was necessary to forget, then to draw it back into memory again at the moment when it was needed, and then promptly to forget it again, and above all, to apply the same process to the process itself—that was the ultimate subtlety: consciously to induce unconsciousness, and then once again, to become unconscious of the act of hypnosis you had just performed. Even to understand the word—doublethink—involved the use of doublethink."

"If one is to rule and to continue ruling, one must be able to dislocate the sense of reality. For the secret of rulership is to combine a belief in one's own infallibility with the power to learn from past mistakes."

"Those who control the present, control the past, and those who control the past, control the future."
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Music Credits🎵:
Bread (Prod. by Lukrembo)

記得把畫質調到1080p 因為系統都自動調到400多.. 哎...
REMEMBER to switch to best quality 1080p]

Hey there! It's Rachel again!
This video is a Vlog of me meeting two of my sixth grade besties in Taipei, Taiwan. It has been 4 years since our last hang out yup.This is just a typical vlog of my friends and I hanging out in Taipei... We went to a restaurant called Belle Époque to eat Boba Soufflé, got our ears pierced (MY FIRST TIME AHHH), and went to a drink shop called Machi Machi. If you are interested in visiting Taipei, wanting to know what Taipei looks like during weekdays winter break, or wanting to see how I got my ears pierced, MAKE SURE TO FINISH THE VIDEO!
I spoke Mandarin throughout the video, but I did include subtitles in both English and Mandarin, so hope you enjoy my vlog!

嗨我是瑞秋
我已經四年沒見我小學同學了所以趁這次放假見兩個好閨蜜！這個影片就很平常哈哈，我們去美好年代吃甜點，去打了耳洞（我第一次打，有收錄心得），然後我們有去Machi Machi 喝飲料。我全片都講中文，但是有附上中英字幕所以可以一起看歐！ 謝啦希望你喜歡！

記得按讚分享訂閱 Plz Like, Share, and Subscribe!
- 我的 IG: rachel_rchlchn
- Angel's IG: angel1019.wjh
- Ingrid's IG: ingrid.chenn

影片來源 source of clips：自行攝影
剪片/攝影 editor/director：陳佑慈 Rachel
軟體 Apps: Final Cut Pro
音樂 Music:
-Summer: No Copy Right Music

►facebook：https://www.facebook.com/alinalo0407/
►Instagram: @alinalo0407

阿這次真的超開心收到M.A.C的公關品!!!!
除了試色之外，也有三種唇露的變化示範喔～
雖然是公關品，影片最後還是有提供客觀的心得給你們參考：）
謝謝你們願意看我的影片～我愛你們!!!

試色順序
#104 Stuck in Love 我最愛的顏色
#106 No Interruptions
#107 Peach Aflush
#103 Like Candy

#愛愛之吻 #letsmaclove #12H染唇露

⦿此影片為廠商提供公關品。廠商未要求分享至此影片，也無權干涉修改影片內容之產品。

music:
https://soundcloud.com/vbnd/i-hope-i-see-you-again

#合作相關請聯繫 ::Contact
alinalo040722@gmail.com

FTC: This video is not sponsored.