Fort introduction: After the German invasion, a permanent fort was set up on the north and south sides of the mountain, named "Bismarck Fort", which was named after Germany's "Iron-Blooded Prime Minister". The south fort has four field guns, and the north fort has two field guns and two machine guns. The south and north forts are both dangerously located on dangerous rocks on the mountainside, commanding the city. They form a barrier to protect the urban area with Taiping Mountain to the east and Chushui Mountain fort to the northwest. In the early days of the Japanese-German War, the fort "made a lot of achievements" in fighting back the Japanese army. Later, the German army was out of strength and was forced to surrender to the Japanese army. The German army "blowd up the fort in anger" and only part of it was preserved.