The earth building is a typical form of Chaozhou mountain people. There are many ring-shaped earth buildings with unique architectural forms (Chaozhou people commonly known as Tulou Village) in the Fenghuang Mountain area and other veins in Chaozhou City. Nanyang Tower is located in Yongshan Village, Shangshan Town, Raoping County. It was built in the second year of Ming Jianwen (AD 1400). It is a ring-shaped building with yellow soil. The upper part of the gate has the inscription "Nanyang Building". There are 26 houses in the building. There is a circular plaza in the center and a round well. The clothes that are drying are gently stretched under the touch of the sun and the breeze. The interior of the building is made up of wood and gray tiles. The building is ring-shaped in the interior, and the corridor corridor is combined with the room unit structure. All the rooms in the earth building are the same size, and the whole is uniform; all the doors and windows in the building are facing the patio, with plenty of sunshine and air, which is warm in winter and cool in summer. The back wall of the room is the outer wall of the building. The thickness is generally more than 1 meter. It is solid and reliable, has a defensive function, and is moisture-proof and heat-insulated. It is one of the relatively intact earth buildings in the 655 Tulou Village in Raoping.