Photo taken on July 20 shows the picturesque scenery in ancient Heshun county in Tengchong, Southwest China’s Yunan province. [Photo/Xinhua]

Photo taken on July 20 shows the picturesque scenery in ancient Heshun county in Tengchong, Southwest China’s Yunan province. [Photo/Xinhua]

Photo taken on July 20 shows the picturesque scenery in ancient Heshun county in Tengchong, Southwest China’s Yunan province. [Photo/Xinhua]

Photo taken on July 20 shows the picturesque scenery in ancient Heshun county in Tengchong, Southwest China’s Yunan province.[Photo/Xinhua]

Photo taken on July 20 shows the picturesque scenery in ancient Heshun county in Tengchong, Southwest China’s Yunan province. [Photo/Xinhua]