Former South Breakwater of Anping Port

For approximately 200 years, from the Dutch period, through the Koxinga (Zheng) period, until the 2nd year of the Daoguang Emperor's reign in the Qing dynasty, Anping, located off the coast near Tainan, was a small island disconnected from the main island of Taiwan. The sea between Anping and the Tainan coast was then known as Taijiang Bay, where ancient large warships could enter and exit, with a depth of approximately 5 to 6 meters. Anping was one of a series of sandbars, originally named Yikunshen (一鯤鯓). To the south of Anping, extending to the vicinity of the current Erren River estuary, there were another six sandbars. These seven sandbars were individually named from Yikunshen to Qikunshen (七鯤鯓). North of Anping, across a waterway, lay the Beixianwei (北線尾) sandbar. This waterway was a crucial passage for entering Taijiang Bay, guarded by Fort Zeelandia (Anping Old Fort), which was built by the Dutch. North of Beixianwei, across the Luerhmen (鹿耳門) channel, lay the Xixinggang (隙行港) sandbar, which was also an important entrance to Taijiang Bay.