This course is firstly to watch the video "Tang'an Dong village". Through watching the video, we can understand the Dong village and see its wonderful buildings and unique customs. Tang'an Dong village, located in Zhaoxing Township, Liping County, Guizhou Province, is a Dong ecological museum established by China and Norway. Tang'an Dong village has beautiful scenery and beautiful environment. In the video, it introduces the three most famous Dong village buildings: Drum Tower, fengyuqiao, and stepped song hall. The design principle, building materials, and functions of Drum Tower, the long walk of fengyuqiao, and the joyful singing of stepped song hall are introduced. In addition, the course also introduces the traditional customs of the Dong people, such as sacrificing "Sa"Festival, blocking the way to welcome guests, long table banquet, Dong opera and so on. The Dong people advocate "Sa" and hold a strong festival of sacrificing SA every year. Welcoming guests by blocking the road is the highest reception ceremony of the Dong nationality, which expresses the hospitality of the Dong family.