Sha Tau Kok River

The Sha Tau Kok River (Chinese: 沙頭角河; Hanyu Pinyin: Shātóujiǎo Hé), along with Sham Chun River, serves as the natural border between Hong Kong and mainland China. It is situated at the northeastern corner of North District, Hong Kong and the southeastern corner of Shenzhen, Guangdong. It flows from the source at Sham Chun River near Pak Kung Au and eastward into Starling Inlet, which is then connected to Mirs Bay.