Just now I was so stupid: seeing the NFT floor price look like it's about to turn, I got itchy to "snatch" it, and as a result, a small order with too loose slippage was placed, the depth was thin, and the transaction was directly drained. After buying, I immediately felt something was off... To put it plainly, it’s not the market deceiving me, but my order timing was too rushed, and I took liquidity for granted. In the future, if I really want to handle these emotional points, I’d rather split the order into two slow parts, or simply wait for one confirmation, and not use the excitement of "mainnet possibly issuing tokens or points" as a reason. Even if the testnet is hot, I shouldn’t bring that speed into real money. For now, I’ll do this—lower the default slippage value.