I got curious and went through all the Quote Reposts about this Bitcoin Core client vulnerability—it's all in English, couldn't find anything in Chinese. So let me nag about it again: In extremely rare cases when migrating Legacy (BDB) wallets, Bitcoin Core 30.0 and 30.1 might delete all wallet files under the same node. Remember to back up, or just avoid using the migration feature for now. Bitcoin Core will release version 30.2 to fix this issue.