In the 12th year of the reign of Qing Guangxu Emperor (1886), the governor of Fujian and Zhejiang Yang Chang-Chun, and Taiwan Provincial Governor Liu Ming-Chuan personally surveyed the terrain of Penghu, and decided to build Magong Castle for defensive purpose. After that, the Commander Wu Hung was responsible for supervising the construction. This project started in December of the next year (1887), and was finally completed in October 1889, totally lasting 1 year and 10 months. It is the last castle of Taiwan built in the Qing Dynasty, and the construction of this Magong Castle integrated the military, economic and administrative center of Penghu. In terms of size, Magong Ancient Castle is 2631.5m in circumference, and has 570 battlements in a total height of 6m together with the wall, of which the groundwork is 1.17m in depth and 8m in thickness. Magong Ancient Castle has six city gates: the east gate is called Chaoyang Gat the small west gate is called Shuncheng Gate the south gate is called Jixu Gate the north gate is called Gongcheng Gate the small south gate is called Yingxun Gate and there is no city-gate tower at the west gate. The Shuncheng Gate we see now is the small west gate. Different from common city wall which will remain square holes for observation and fire, Shuncheng Gate was built by laying the local fire-resistant stones produced by Penghu, and in connection with battlement above built by laying Lao-Gu stones. Between the two stories, an inch-height bricks were piled for decoration purpose, and then oyster shell ash was painted on the surface for protection purpose. At present, the relics of Penghu Magong Castle only left Shuncheng Gate and West Gate two gates and a part of the western city wall. In addition, this Shuncheng Gate is the solely preserved gate house building in the relics of Magong Ancient Castle. Directly from the right of Shuncheng Gate, you can go upstairs to the second floor battlement, which applied double swinging