Recently, I saw a bunch of people saying "Just throw it into the pool and pay the fee," and I feel a bit like sighing... The curve of AMM is essentially helping you automatically "sell low and buy high." Once the market runs in a single direction, the amount of tokens you get back changes, and this difference is basically impermanent loss, not some mysterious phenomenon. Whether the fee can cover it really depends on volatility and trading volume; it's not as stable as you think.

By the way, Layer 2 is now arguing every day about TPS, fees, and subsidies. It's lively, but no matter how fast the chain is, it can't save you from losing assets by throwing them into pools you don't understand. There are many tutorials, but I prefer those that clearly illustrate "under what circumstances you lose, and where the loss comes from," plus reminders about authorization/contract risks... Anyway, market making isn't a get-rich-quick scheme, so don't get carried away by "profit screenshots."