Yongding, which went with a day trip, is more than two hours away from Xiamen city. There are many Tulous in Yongding. We mainly visited Huaiyuan Building and Chengqi Building. The earth building built with solid earth is strong and durable, not only warm in winter and cool in summer, but also fire prevention and anti-theft and anti-thief, several layers inside and outside, it is easy for thieves to come out. Admiring the wisdom of the ancients again!