the basement of Beijing international trade center enters from the east gate of the subway international trade station. The basement of Beijing International Trade Center is divided into two platforms, east and west. If you enter, just choose the east gate of the subway international trade station. Separated platforms are communicated with each other through transverse channels. The transfer hall has four floors underground, each with an area of 3, square meters, of which the third and fourth floors are used as subway transfer halls and equipment rooms, and the first and second floors are commercial facilities.