Serbian President Aleksandar Vucic (R) shakes hands with a Chinese worker during the opening ceremony of a highway section in Belgrade, Serbia, on Dec. 18, 2019. A new section of Serbia's international E-763 highway has been completed three months ahead of deadline by China Communication Construction Company (CCCC), and opened for traffic at a ceremony in the outskirts of Belgrade on Wednesday. (Xinhua/Shi Zhongyu)