Liangxiongdiyu Island ("两兄弟屿") is located 67 km northeast of Shenjiamen . It belongs to the Dongji Town of Zhoushan city. Liangxiongdiyu is the baseline point of the Chinese territorial sea. 2006, The stele of "Chinese territorial sea baseline point" erected.

• Zhoushanqundao (舟山群岛)
• Suyanjiao (Suyan Rock) (苏岩礁)
• Sheshandao(佘山岛)
• Yushanliedao(渔山列岛)
• aizhouliedao(台州列岛)

• Declaration of the Government of the People's Republic of China on the baselines of the territorial sea(May15th, 1996)
• (in Chinese)中国东海１０座领海基点石碑建成
• (in Chinese)中华人民共和国政府关于中华人民共和国领海基线的声明(1996年5月15日)

30°10.1′N 122°56.7′E / 30.1683°N 122.9450°E / 30.1683; 122.9450