Aerial photo taken on Feb. 2, 2017 shows a traffic congestion on an expressway in Nanning, capital of south China's Guangxi Zhuang Autonomous Region. China's transport system saw rising traffic Wednesday as millions of people started to return to work after the week-long Lunar New Year Holiday. Traffic on expressways around major cities also increased, leading to rising congestion. (Xinhua/Huang Xiaobang)
