According to ChainCatcher, regarding the question of "how to manage wrapped token collateral", Binance published a blog post in response, saying that assets are always fully collateralized and supported 1:1, and users can withdraw their assets at any time. Sometimes collateralized assets are stored in cold wallets that are not known to the public, or are not transferred to appropriate hot wallets quickly enough, which gives the impression that wrapped tokens are sometimes under-collateralized. Wrapped tokens are 1:1 supported and are securely stored in different wallets.

Binance said that in the coming weeks and months, users will see updated wallets on the B-Tokens collateral proof page to further increase transparency. (Source link)