Old Beijing the imperial palace, the Forbidden City, is China's twenty-four emperors of the Ming and qing dynasties imperial palace, now refers to the national Palace Museum in Beijing, is located in the centre of Beijing, is incomparable ancient architecture masterpiece, is also the world's largest and most complete existing the ancient wooden structure buildings. Palace buildings are wooden structure, yellow glazed tile roof, blue and white stone base, decorated with golden and brilliant color paintings. The building is arranged along a north-south axis and spread out on both sides. According to its layout and function, it is divided into two major parts: the outer court and the inner court. The architectural atmosphere of the outer and inner court is quite different. The outer court centers on the three main halls of the hall of supreme harmony, the hall of central harmony and the hall of bao he.