A citizen use a smartphone to search high-speed railway tickets from Shenzhen North Station to Hong Kong West Kowloon Station in Shenzhen, south China's Guangdong Province, Sept. 10, 2018. The Guangzhou-Shenzhen-Hong Kong high-speed railway will officially start operation on Sept. 23. The sale of the tickets began on Monday. (Xinhua/Mao Siqian)
