Flag after flag Cijin area of the fort is located in Kaohsiung, Taiwan, after the mountain, the mountain of the flag out of the throat guards Kaohsiung - flag after Fort, 1875 (the first year of the Qing dynasty) is completed, and the other side of West Bay "Xiongzhen North Gate "confrontation.

Tongzhi years, Shen Pao-chen in this build new western forts, Liu Ming-chuan continued to strengthen purchasing inch cannon fire, repulsed at the Sino-Japanese War when the Japanese ship, the Japanese occupation era cannon being removed, leaving only the fort. Bat sculptured walls, inside thick walls of Barracks, the entire flag fort can roughly be divided into three zones: the North is the practice field, in the area of command, Southern Barracks. Soldiers have guns seat upper house four main materials for the iron, cement and red brick, brick using "human" character puzzle method, the district level a pattern, and each stage are different ways of brick, nor represent the same meaning . 1985 (1985), Taiwan Ministry of Interior announced as two monuments.