An Ancient Coastal Defense (Dagukou)

The gateway to Beijing is Tianjin, and the "shield of Tianjin" is Dagu seaport. 60 kilometers to the southeast of Tianjin, Dagu seaport is located where Haihe River flows into the Bohai Sea. In 1858, in order to strengthen the coastal defense and guarantee the safety of Beijing, Emperor Xianfeng of Qing Dynasty had 6 gun fortifications built here. In the country's contemporary history, China ruled from Qing Dynasty's imperial court was exposed to repeated invasions by western imperialist powers. Dagu seaport gradually became an important military point by which Qing Dynasty fought against foreign invasions.