File photo taken on Dec. 29, 2016 shows Shekou Port of Shenzhen Port in Shenzhen, south China's Guangdong Province. According to local transport commission, the annual container throughput of Shenzhen Port has reached 23.97 million TEU (20-foot equivalent units) in 2016 and ranked the third largest in the world for the fourth consecutive year. (Xinhua/Mao Siqian)
