Aerial photo taken on July 2, 2021 shows a section of the China-Laos railway under construction in Ning'er Hani and Yi Autonomous County of Puer City, southwest China's Yunnan province. 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)