Photo taken on June 21, 2016 shows a statue in Beikan grottoes of Bazhong, southwest China's Sichuan Province. According the statistics of relics authority, there are more than 8,000 statues in some 500 grottoes of Bazhong. Most of them were created in Tang Dynasty (618-907). The Bazhong Grottoes feature carving and painting of the figures in Tang Dynasty. (Xinhua/Jiang Hongjing)

Photo taken on June 21, 2016 shows Buddha statues in Beikan grottoes of Bazhong, southwest China's Sichuan Province. According the statistics of relics authority, there are more than 8,000 statues in some 500 grottoes of Bazhong. Most of them were created in Tang Dynasty (618-907). The Bazhong Grottoes feature carving and painting of the figures in Tang Dynasty. (Xinhua/Jiang Hongjing)

The aerial photo taken on June 21, 2016 shows Nankan grottoes (L, Front) in Bazhong, southwest China's Sichuan Province. According the statistics of relics authority, there are more than 8,000 statues in some 500 grottoes of Bazhong. Most of them were created in Tang Dynasty (618-907). The Bazhong Grottoes feature carving and painting of the figures in Tang Dynasty. (Xinhua/Jiang Hongjing)

Photo taken on June 21, 2016 shows Buddha statues in Nankan grottoes of Bazhong, southwest China's Sichuan Province. According the statistics of relics authority, there are more than 8,000 statues in some 500 grottoes of Bazhong. Most of them were created in Tang Dynasty (618-907). The Bazhong Grottoes feature carving and painting of the figures in Tang Dynasty. (Xinhua/Jiang Hongjing)

Photo taken on June 21, 2016 shows Buddha statues at Shuining Temple in Bazhong, southwest China's Sichuan Province. According the statistics of relics authority, there are more than 8,000 statues in some 500 grottoes of Bazhong. Most of them were created in Tang Dynasty (618-907). The Bazhong Grottoes feature carving and painting of the figures in Tang Dynasty. (Xinhua/Jiang Hongjing)

A worker weeds in front of grottoes at Shuining Temple in Bazhong, southwest China's Sichuan Province, June 21, 2016. According the statistics of relics authority, there are more than 8,000 statues in some 500 grottoes of Bazhong. Most of them were created in Tang Dynasty (618-907). The Bazhong Grottoes feature carving and painting of the figures in Tang Dynasty. (Xinhua/Jiang Hongjing)

Tourists visit Nankan grottoes in Bazhong, southwest China's Sichuan Province, June 21, 2016. According the statistics of relics authority, there are more than 8,000 statues in some 500 grottoes of Bazhong. Most of them were created in Tang Dynasty (618-907). The Bazhong Grottoes feature carving and painting of the figures in Tang Dynasty. (Xinhua/Jiang Hongjing)

Photo taken on June 21, 2016 shows Buddha statues in Nankan grottoes of Bazhong, southwest China's Sichuan Province. According the statistics of relics authority, there are more than 8,000 statues in some 500 grottoes of Bazhong. Most of them were created in Tang Dynasty (618-907). The Bazhong Grottoes feature carving and painting of the figures in Tang Dynasty. (Xinhua/Jiang Hongjing)