Woofun AI reports that China Merchants Union Bank issued a notice on August 21 regarding the review of mainland investor accounts, aligning with HKMA and CSRC risk management guidelines. Accounts identified as "zero-balance inactive investment accounts"—defined by zero assets as of May 22, 2026, and no transactions in the past 12 months—must submit a "Statement of Inactive Investment Account". Customers can file via the mobile app or customer service hotline, confirming personal data accuracy and fund legality. The bank warns that failure to submit will suspend new investment transactions, with account closures expected to begin in November 2026 for non-compliant holders.