Two brother island introduced.

Ershixiong Island (3010.1'n,122 56.7e), also known as "Ershixiong Island", belongs to Dongji Town, Putuo District, Zhoushan City, Zhejiang Province, and is located 67 kilometers east of shenjiamen, Zhoushan Islands. Brother island is one of the basic points of China's territorial waters. In 2006, the PLA Navy erected a stone tablet on the island.