I just got educated by myself again: I clearly wanted it to be "smooth," but a single swap directly caused a slip and ate up the full amount. Looking back, it's not that the contract is too mysterious, but that I was too impatient: the pool wasn't deep enough, and I tried to put in everything at once, pushing the price away; I hesitated for two seconds in the middle, and when the market shook, my estimate couldn't keep up. In the future, I really need to treat placing orders like a rhythm game—break it into two or three transactions, check the depth first, then confirm, and avoid being impulsive.

By the way, I thought of the recent on-chain games with inflation + studio + coin price spiral—it's kind of the same idea: when the depth isn't enough, any "fast in, fast out" feels like stepping on the gas and turning the steering wheel... Basically, liquidity can't handle people's expectations.

I saved screenshots of this failed trade before and after—it's an old habit. I'll draw a small flowchart and stick it on the wall as a reminder not to be impulsive.