Photo taken on Sept. 23, 2018 shows high-speed trains at Shenzhen North Railway Station in Shenzhen City, south China's Guangdong Province. At 6:44 Sunday (1044 GMT Saturday), train G5711 left Shenzhen North Railway Station for Hong Kong West Kowloon Station, marking the opening of the Hong Kong section of the Guangzhou-Shenzhen-Hong Kong High-speed Railway and that of the whole Guangzhou-Shenzhen-Hong Kong High-speed Railway. Train G5736 left Hong Kong West Kowloon Station at 7:00 on Sunday for Shenzhen North Railway Station. (Xinhua/Wang Shen)?