Group 1 - The launch of the Cross-Border Payment System marks a significant development in the cross-border payment market, with multiple banks including Bank of China, Agricultural Bank of China, and China Construction Bank actively participating [1][2] - The first cross-border remittance transaction took place in Shenzhen, enabling real-time cross-border remittances between residents of mainland China and Hong Kong [1] - The initial participating banks from mainland China include Industrial and Commercial Bank of China, Agricultural Bank of China, Bank of China, China Construction Bank, Bank of Communications, and China Merchants Bank, while Hong Kong banks include Bank of China (Hong Kong), East Asia Bank, China Construction Bank (Asia), Hang Seng Bank, HSBC, and ICBC (Asia) [1] Group 2 - Bank of China has introduced the Cross-Border Payment System, allowing Hong Kong residents to register their mainland mobile numbers and initiate remittance transactions without needing to fill in additional account information, enhancing convenience [1][2] - Agricultural Bank of China has also launched its cross-border payment services, with a focus on real-time remittance for various scenarios such as tuition and medical payments, initially piloting in Shenzhen before expanding to other regions [2][3] - China Construction Bank has begun offering cross-border payment services in Guangdong, Shenzhen, and Hainan, with plans for nationwide rollout, and is currently waiving service fees for these transactions [3]