Tencent Beijing Headquarters is an office building of 334,000 ㎡. The project has created a new working environment supported by sustainable technology and obtained LEED gold certification. Compared with similar office buildings, this project's total carbon emission is reduced by 55%, and energy-saving is 63.4%. In terms of low-carbon emission, multiple technologies are adopted, such as natural lighting, natural ventilation, sunshade louvers, Low-E hollow glass curtain wall, high-energy lighting, floor air supply, high-efficiency gas-fired boiler, etc.