The ninth Lanzhou Art Collection Exhibition kicks off at the Gansu International Convention and Exhibition Center in Lanzhou City, Gansu Province, on August 10. The exhibition presents antiques, paintings, calligraphies, jewelries, jades, rare stones, ceramics, red wood furniture and so on during the five-day event. The 2017 Lanzhou International Stone Appreciation Cultural Festival showcasing over 260 rare stones from all across China is also held during the same period. [Photo/Lanzhou.cn]