Introduction to Zhongxiandi: Zhongxiandi is also known as "Ninety-Nine Rooms" (actually 112 rooms), with a total area of ​​7780 square meters, surrounded by white stone and red brick walls. The main building is a five-entry palace with an attached academy. The martial arts hall, dressing building and garden are still intact. After Zheng Chenggong regained Taiwan in 1662, a large number of Zheng's troops stayed on the island to cultivate wasteland. During the Yongzheng period of the Qing Dynasty, Zheng Yunjin, a maritime merchant from Ishii, opened a fleet in Taiwan called "Boxing Line". After he became successful, he used his silver to buy the official title of "Zhongxian Dafu". He purchased high-quality fir trees in Taiwan and transported them back to Ishii to build "Zhongxian".