Core Insights - The agent witness account opening service for Hong Kong and Macau residents has significantly improved convenience for banking in mainland China, with 472,000 personal bank accounts opened and transaction amounts exceeding 40 billion yuan as of June 2025 [1][2]. Group 1: Service Expansion - The service has been expanded to six additional cities in the Guangdong-Hong Kong-Macau Greater Bay Area, achieving full coverage of the region's mainland cities [1]. - Eight banks, including major institutions like Bank of China and HSBC, are now participating in the agent witness account opening service [2]. Group 2: Policy and Economic Impact - The initiative is part of broader policies aimed at enhancing financial connectivity in the Greater Bay Area, included in the "16 Measures for Hong Kong" and the "30 Financial Measures for Hengqin" [2]. - The growing number of Hong Kong and Macau residents traveling, investing, and retiring in the Greater Bay Area has increased demand for banking services across more cities [2]. Group 3: Payment Services Innovation - The People's Bank of China in Guangdong has introduced various payment innovations to create a seamless payment service environment for Hong Kong and Macau residents, including a unified currency settlement account system and cross-border electronic wallet applications [3].