Binance's hot wallet transferred 36000 ETH to Bybit's cold wallet, which deserves a thumbs up for Binance. The founder of SlowMist stated that from a security perspective, it is recommended to urgently stop the wallet system for unknown reasons. He believes that CZ's previous suggestion and Bybit's final solution are not problematic. It seems that I misunderstood CZ. From a security perspective, I only considered the user experience.