Tourists visit the Jade Dragon Snow Mountain scenic area in Lijiang, southwest China's Yunnan Province, June 6, 2019. Qiu Zhen, a tourist from Nanjing, east China's Jiangsu Province, became the 50 millionth visitor to the Jade Dragon Snow Mountain scenic area on Thursday. The lucky tourist is given life-time free access to the scenic area. (Xinhua/Qin Qing)

Qiu Zhen (R) and a family member plant a tree to mark her becoming the 50 millionth visitor to the Jade Dragon Snow Mountain scenic area in Lijiang, southwest China's Yunnan Province, June 6, 2019. Qiu Zhen, a tourist from Nanjing, east China's Jiangsu Province, became the 50 millionth visitor to the Jade Dragon Snow Mountain scenic area on Thursday. The lucky tourist is given life-time free access to the scenic area. (Xinhua/Qin Qing)

Tourists visit the Jade Dragon Snow Mountain scenic area in Lijiang, southwest China's Yunnan Province, June 6, 2019. Qiu Zhen, a tourist from Nanjing, east China's Jiangsu Province, became the 50 millionth visitor to the Jade Dragon Snow Mountain scenic area on Thursday. The lucky tourist is given life-time free access to the scenic area. (Xinhua/Qin Qing)

Qiu Zhen (5th R), the 50 millionth visitor to the Jade Dragon Snow Mountain scenic area, is welcomed at a ceremony in Lijiang, southwest China's Yunnan Province, June 6, 2019. Qiu Zhen, a tourist from Nanjing, east China's Jiangsu Province, became the 50 millionth visitor to the Jade Dragon Snow Mountain scenic area on Thursday. The lucky tourist is given life-time free access to the scenic area. (Xinhua/Qin Qing)

Qiu Zhen (1st L), the 50 millionth visitor to the Jade Dragon Snow Mountain scenic area, poses for a souvenir photo with family members on the mountain in Lijiang, southwest China's Yunnan Province, June 6, 2019. Qiu Zhen, a tourist from Nanjing, east China's Jiangsu Province, became the 50 millionth visitor to the Jade Dragon Snow Mountain scenic area on Thursday. The lucky tourist is given life-time free access to the scenic area. (Xinhua/Qin Qing)