Quadrangle is an important unit of Beijing’s traditional construction. As a typical quadrangle, Courtyard 7 consists of three rows of courtyards, which occupies an area of 1800 square meters. Restoration plan had the approval of the Beijing Bureau of Cultural Relics. The restoration project took more than three years’ time and lots of energy, human, material and financial resources were put into it. Some traditional technologies such as “挖补” and “墩接” were used to restore the courtyard to the historical original condition.
   Meanwhile, in order to adapt to the people’s higher request for environment and life quality, Courtyard 7 has made transformation to the system of water, heating and electricity and introduced the overseas advanced technology and equipment. The biggest luminescent spot is that Courtyard 7 utilizes Geothermal heat pump and Solar energy technology to provide 24 hours hot water, heat and air condition. The strong point of this technology is that it can save energy and protect the environment. This project alone took more than seven months. 43 wells were dug and many difficult problems were solved during the construction. Courtyard 7 is the first courtyard hotel in Beijing to adopt the Geothermal heat pump system, which makes the Chinese and foreign guests appreciate the traditional culture during a comfortable atmosphere.