Sihai Town 四海镇
Town
Jiuyanlou near Shiyao Village, 2009
Location in Yanqing District
Sihai Town Show map of Beijing Sihai Town Show map of China
Coordinates: 40°31′48″N 116°24′25″E / 40.53000°N 116.40694°E / 40.53000; 116.40694
Country	China
Municipality	Beijing
District	Yanqing
Village-level Divisions	1 community 18 villages
Area
• Total	115.8 km2 (44.7 sq mi)
Elevation	656 m (2,152 ft)
Population  (2020)
• Total	4,343
• Density	38/km2 (97/sq mi)
Time zone	UTC+8 (China Standard)
Postal code	102107
Area code	010

Sihai Town (simplified Chinese: 四海镇; traditional Chinese: 四海鎮; pinyin: Sìhǎi Zhèn) is a town in the Yanqing District of Beijing.^[1] It borders Qianjiadian Town and Zhenzhuquan Township in the north, Liulimiao and Yanqi Towns in the east, Bohai and Jiuduhe Towns in the south, as well as Yongning Town and Liubinbao Townships in the west. Its population was 4,434 as of 2020.^[2]

This region hosted a major smelter during the Yuan dynasty. With more workers immigrated here from all over China, the region was named Sihai (Chinese: 四海; lit. 'Four Seas') in the sense of "People come here from all four seas/all over the world."^[3]

Sihai Town sits in a basin within Yan Mountain Range, with the Caishi River flowing through it.

As of the year 2021, 19 subdivisions, more specifically 1 community and 18 villages, constituted Sihai Town, They can be seen in the following table:^[4]

• List of township-level divisions of Beijing