The Guangzhou-Kowloon Railway, Guangzhou-Shenzhen Quasi-high-speed Train Service, the Guangzhou-Meizhou-Shantou Railway and the Beijing-Kowloon Railway interchange in Dongguan. The railway customs in Dongguan Railway Station is a Class A Customs in China responsible for entry-exit inspection and quarantine of the through trains from Beijing and Shanghai to Kowloon. This has created great convenience for travelers between Hong Kong and such places as Beijing, Shanghai and its neighboring cities in Eastern China. Dongguan has thus become one of the centers for railway transportation in the south of China.