What is ceiling

Ceiling, also known as suspended ceiling, that is, indoor ceiling, is a building indoor space of the top surface, is the general term for the top of the indoor decorative decoration, with shelter, heat insulation, sound insulation, thermal insulation role. In interior design, the ceiling can be painted, painted landscaping treatment, as well as the installation of chandeliers, light tubes, ceiling fans, skylights, air-conditioning, improve indoor lighting and air circulation. Most of the ceilings in traditional Chinese houses were made of grass mats, reed mats, wooden boards, etc., which were called "dust-bearing" in the Han Dynasty, and in the Tang and Song dynasties, the top of the ceiling was covered with a tent, which later evolved into a small wooden ceiling. In early contemporary Chinese housing, the ceiling is just a layer of lime.