Xi'an Metro Line 4 station equipment installation and decoration project construction, including the administrative center station, Wenjing Road station and its adjacent section of the overall contract contract, the construction content includes station equipment installation projects (including ventilation and air conditioning and heating, Water supply and drainage, fire fighting, gas fire extinguishing, low voltage power distribution and lighting, fire automatic alarm system FAS, environment and equipment monitoring system BAS, access control system, etc.), building decoration works in public areas and equipment areas of stations, and construction and installation works out of the ground.