Dasong Ancient Town, Ancient town in Ningbo, China

Dasong Fort is a Ming-dynasty qianhuosuo garrison at the foot of Fenghuang Mountain in Zhanqi, Yinzhou, Ningbo. Its surviving wall, about 7 m high and 5 m thick, has a rammed-earth core faced with rough stone; the best-preserved stretch is the northern section of the west side and the north wall. In front of the Dongcheng village committee, the barbican of the east gate keeps its stone north wall and a bar-shaped stone slot 0.3 m wide, 2.2 m high and 0.15 m deep.

Built in 1387 by Tang He, Duke of Xinguo, as a coastal patrol station against Japanese pirates, Dasong was upgraded to a thousand-household guard with 1,120 soldiers and 17 officers. Its 740-zhang wall enclosed three gates and was ringed by six beacon towers. Most of the wall was demolished in 1956; the surviving sections and five beacon towers were listed as Zhejiang provincial heritage sites in January 2017.

The site's name comes from Dasong Suo, the Ming garrison; the villages of Xicheng and Dongcheng still mark the former east and west gates. The wall was built around the foot of Fenghuang Mountain, and the moat linked to the Dasong River, so water both defended and connected the post. Five Ming watchtowers survive on hilltops facing Xiangshan Port.

The remains lie in Xicheng and Dongcheng villages, Zhanqi town, Yinzhou district; most of the wall stands in Xicheng. The surviving stretch runs along the foot of Fenghuang Mountain, with the east gate barbican in front of the Dongcheng village committee. The moat begins at No. 17 Beimen Road, Xicheng, and reaches the Dasong River near No. 87 Xiapu residential area.

The east gate's barbican survives in front of Dongcheng village committee: only its stone north wall and a bar-shaped stone slot remain, the slot 0.3 m wide, 2.2 m high and 0.15 m deep, identified as part of the barbican gate mechanism.