Xuzhou has been a must-see place for soldiers since ancient times, which shows the importance of its location. Many famous people also originated from this. Hubu Mountain is the place where rich people live. The ancient complex is the ancestral residence of large families that have been well preserved since the Ming and Qing Dynasties. There are a total of Liujia, Yuanjia, Quanjia, Yujia, Zhengjia and Lijia and other compound, and they are rated as the sixth batch of national insurance. These are almost connected together, and I really have to get lost when I buy tickets! It is recommended to start with Liujia.