According to Caixin, in response to the matter of “some banks in Hong Kong requiring a declaration to be signed when opening investment accounts,” the Hong Kong Monetary Authority said today that the relevant regulatory requirements were issued on May 22 to all authorized institutions. The materials provided by the Hong Kong Monetary Authority show that, when opening and managing investment accounts for Mainland investors, registered institutions are required to take three additional measures, including: 1. Closing investment accounts that were opened using suspicious or forged documents, and identifying any customer investment accounts opened using suspicious or forged documents from January 2023 or during any other period specified by the Monetary Authority; such documents include identity verification documents; 2. Closing zero-balance dormant investment accounts, specifically investment accounts held by Mainland investors that have had no asset balance as of May 22, 2026, and have had no activities initiated by the customer within the 12 months prior to the reference date; 3. When opening a newly established investment account, obtaining a written declaration from the Mainland investor confirming that all funds used to support investment activities and related settlements are from legitimate sources outside Mainland China, among other requirements.