Let me talk about the DeFi projects I've played and got hacked. I won't mention the ones I haven't played, as I've played too many and forgotten some, so I'll just write based on my impressions. The following are the projects where I had money stored but withdrew before they got hacked, luckily avoiding the mines: yfi finance, the ace project of AC, the ancestor of yield farming, also got hacked; yfv finance, a clone of yfi, got hacked two or three times and was eventually shut down by hackers; cream finance, also shut down by hackers, was hacked due to a miscalculation of collateral value in yusd from yfi above, leading to a looped loan hack; sushi finance, xsushi had a profit loophole, but it wasn't a big issue. At that time, aave's xsushi also had the same value calculation problem as cream, but it couldn't be exploited. curve finance, I stored u, but the various eth derivatives that got stolen, I avoided; rdnt finance, shut down by hackers; packagebunny finance, shut down by hackers; qubit finance, shut down by hackers; ankr, I stored eth, but bnb was stolen, I avoided it; alchemix fi, got hacked long after I exited; abracadabra money, got hacked long after I exited; Blast, because a big holder of Deth got phished, various assets in the lending protocol were borrowed by hackers, forming bad debts. —— Mines where I lost some money: harvest finance: This was really painful, I didn't store u but I held a lot of farm at the time, even though only 30 million was hacked out of a 1 billion TVL, the farm price was halved; armor fi, hackers tricked the project team into dumping tokens, lost a bit but it was okay; prisma finance, hackers took a small portion of the pool's money. —— Mines where I lost money but got it back: O3swap, this was a mine where a lot of money was stolen, Shenyu and many big holders were also involved, luckily it came back in the end, thanks to many white hat companies for their help; kava network, used multichain for cross-chain bridge, I stored it on the kava official website. Then the founder of multichain was caught, and after a few days of withdrawal and deposit, the door was permanently closed. The u in Ftm also became worthless; Defrost finance, the project team claimed to have lost 3 private keys simultaneously and got hacked, I spent some money to locate and contact the project team, and got them to turn the hacker into a white hat. But, the largest depositor had about 10m USD, which was a bankrupt institution in the US, and after being taken over by lawyers, the money was never withdrawn, maybe the lawyers didn't know how to operate, in the end, the money was probably taken by the project team; ParaSpace, it seems Shenyu's team preemptively executed the hacker's transaction and saved the money, thanks. —— Mines where I truly lost all my principal: Evodefi, a bridge, suddenly got stuck on withdrawals and then disappeared; Cetus finance, an official Dex, with a strong background, the incident was a bit unexpected. —— There might be some omissions of projects that got hacked, and various rule traps and rug pulls, I won't write about those that weren't hacked by hackers. Anyway, after playing all the way, I feel like I've been walking a tightrope to make money, and I've chosen more conservative projects in the later stages, but this time I really stepped on a landmine. I should gradually reduce my investment in DeFi in the future, and do some stock investments, so I can sleep more peacefully.