Photo taken on Sept. 4, 2019 shows a border trade center of Bakti port in Tacheng, northwest China's Xinjiang Uygur Autonomous Region, Sept. 4, 2019. Located on the border of China and Kazakhstan, the Bakti port has a trading history of more than 200 years. Since the trade center at the Bakti started operation on June 18, the total trade volume has reached 35.73 million yuan (about 5 million U.S. dollars) as of Aug. 31. (Xinhua/Sadat)