Changhua City and Bagua Mountain Fort Introduction
The old-style mountain cannons were no match for the emerging enemy forces on Baguashan, formerly known as Dingjunshan. When Changhua City was completed in the 20th year of the Jiaqing era, a brick fort called Dingjun Mountain Fort was built on the mountain, equipped with four battery positions and a watchtower. In the first year of the Tongzhi era (1862), Dai Chaochun united with the BaGua Society to start a rebellion. A few days later, Baguashan was occupied, and the Dingjun Fort's batteries were also taken over and used to bombard Changhua City, which was subsequently captured two days later.

