The root cause of the issue has been identified — it was caused by enabling the automatic migration sell-off feature. Here is an important tip for everyone: although the automatic migration sell-off feature is convenient, it involves asset operations, so please enable it with caution. It is recommended to fully understand its mechanism and potential impact before activating any automated trading functions. Thanks to the community friends for their patient assistance in helping to trace the problem and resolve this issue. I hope everyone can avoid similar situations when using exchange features, and if you have any questions, be sure to communicate and confirm thoroughly.