Jin Chang 'an is located at No. 16 Baiziwan Road, Chaoyang District, Beijing, on the east side of the East Fourth Ring Road and the post-modern city. The project covers an area of 100000 square meters, and the building types are pure office buildings and commercial buildings. Jin Changan Building is a complex of Grade A office buildings held by the developer as a whole and leased externally. With a total construction scale of 100000 ㎡, the building is a landmark Grade A office complex along Chang 'an Avenue. The project consists of two office buildings (16 floors in Block A and 32 floors in Block C), a hotel (15 floors in Block B1) and a and C standard industry skirt building (5 floors in Block B2). Jin Changan Building is 99.9 meters high and the top refers to the sky needle 137 meters high. It is a landmark. The facade is made of golden glass curtain wall, which is noble and atmospheric. The first to third floors are commercial, and the fourth floor is office buildings. The entrances and exits of commercial and office buildings are independent. The office building has a luxurious lobby of 500 square meters, which shows the sense of dignity of office enterprises. The surrounding greening rate is high, and the above-ground and underground parking spaces are sufficient. Elevator ratio 1:2.