The design style of the Mitsui&Co.(China) Office in Beijing is simple, rigorous and modern. The space is dominated by white, and the lines and contours of black and dark wood are used to make the overall space pattern clear and tough. The white small square compartment of the front reception area is designed to match the black horizontal construction lines and structural blocks of the reception area, and the points, lines and surfaces are combined in the space. The tea break area uses a design technique of dark blue soft wall combined with warm color furniture to distinguish the function of this area from the office space.