The patio of Zhicheng Hall, a Hui-style dwelling, was designed to let in natural light and collect rainwater to extinguish fires. [Photo: CRIENGLISH.com]
![The patio of Zhicheng Hall, a Hui-style dwelling, was designed to let in natural light and collect rainwater to extinguish fires. [Photo: CRIENGLISH.com]](http://images.china.cn/attachement/jpg/site1007/20090730/000d87ad3cdd0bdb8c6851.jpg "The patio of Zhicheng Hall, a Hui-style dwelling, was designed to let in natural light and collect rainwater to extinguish fires. [Photo: CRIENGLISH.com]")
