Fort introduction: Min'an Fort is located on the north bank of National Highway 104. It is a fort built in the 14th year of Shunzhi in the Qing Dynasty. There is a semi-underground main fort on a hill about 20 meters high, with a diameter of nearly 20 meters. Its scale was comparable to that of the Xiamen Hulishan Fort. This fort echoes the south bank fort to guard the "Min'an Gate".