Introduction to Jiudaomen: Jiudaomen is the Miao architectural landscape with the largest number of gates in the world. It is built according to the mountain and using the natural setback of the mountain. It is well-proportioned, very majestic and shocking. Each building in the Nine Doors has a different shape, each has its own swing, and the Nine Doors use different materials. There are three stone doors, three wooden doors, and three brick-wood structure doors. The highest point of the Nine Gates is "Homesickness Terrace". This is where the descendants of Jiuli felt homesick and recalled the land of Dongyi. Facing the east, it is believed that the founder Chi You wanted to return to Dongyi, so it was named "Homesickness Terrace".