Cold wallets aren't cold; hackers are very hot.
Last night, a friend tried "financial management on the blockchain" but ended up with a "poisonous mushroom" wallet—brand new on the outside, but actually had a backdoor. 50 million dollars evaporated in an instant, and the hacker withdrew the funds overnight, taking away trust as well.
Don't be greedy for a few hundred bucks on "Douyin substitutes"; you think it's a safe, but in reality, it's a naked account. Remember: only you should know the wallet's private key; any "pre-set" cold wallet is essentially a public withdrawal code.
Don't let your digital assets fall into the hands of your own cheapness.