Photo taken on Jan 30, 2015 shows an ancient stage in Xizhou township of Dali, southwest China's Yunnan province. China's performing stage is an essential part of traditional Chinese architecture. Most well-preserved ancient stages were built in Ming Dynasty (1368-1644) and Qing Dynasty (1644-1911). It generally consists of indoor and outdoor types. The main construction materials are wood, brick and stone. Its unique acoustics property has become an important object for experts. [Photo/Xinhua]