Being part of the First Silk Road (Dunhuang) International Cultural Expo, Lanzhou Stone Appreciation Culture Expo is held in the city of Lanzhou from September 17 to 26. Jointly held by the appreciation stone associations of Gansu, Qingdao Provinces and Xinjiang Uygur Autonomous Region, the event will present 300 rare stones for the art lovers. [Photo/Chinanews.com]