Construction workers work at Puer Station on the China-Laos railway in Puer City, southwest China's Yunnan province, July 2, 2021. The China-Laos railway, which stretches more than 1,000 km from Kunming, capital of China's Yunnan province, to Vientiane of Laos is scheduled to open in December this year. Upon completion, it will slash the travel time between the two cities to less than one day, according to China State Railway Group Co., Ltd. (Xinhua/Wang Guansen)