Ключевые слова: abstract, architecture, beijing, blue, blur, business, busy, china, chinese, city, commuter, construction, corridor, entry, escalator, floor, hall, indoor, inside, interior, lift, light, mall, metal, metro, modern, move, office, passage, perspective, roof, speed, stair, staircase, stairway, station, steel, step, technology, traffic, transport, walk, walkway, way,