The courtyard, which was created through people's activities, has now come into colorful forms after long-term development. Just as other buildings, the courtyard is also a result of the inte raction between m an and nature. Along with the cities' accelerated process, th e rapid developm ent of social econ omy and the increasing standard of people's living, people pay more attention to environmental and ecological problems, yearning much for the nature, be ing eager for a piece of green space o f their own,...