Description: Yuanyang Building in Nanning, Guangxi, China was built in 1987. It is one of the landmark buildings in Nanning in the 1980s and 1990s. Its staircases are crisscrossed and connected in all directions, connecting the two buildings, connecting the buildings and the neighbors. The building is composed of a variety of lines, combinations and staggered, and there is no elevator, forming a very interesting historical picture.1