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A tourist takes photos of robotic service in Lijiang Ancient Town in southwest China's Yunnan Province, June 6, 2019. Lijiang Ancient Town was listed as a world cultural heritage site by the UNESCO in 1997. (Xinhua/Qin Qing)
A tourist takes photos of robotic service in Lijiang Ancient Town in southwest China's Yunnan Province, June 6, 2019. Lijiang Ancient Town was listed as a world cultural heritage site by the UNESCO in 1997. (Xinhua/Qin Qing)