A worker directs container hoisting operation at a logistic station in Xinzhu Railway Station in Xi'an, northwest China's Shaanxi Province, March 11, 2020. A China-Europe freight train fully loaded with 50 carriages of clothes, electronic components and electric appliance left the Xinzhu Railway Station in Xi'an City for Mannheim in Germany on Wednesday. (Photo by Tang Zhenjiang/Xinhua)

Photo taken on March 11, 2020 shows a China-Europe freight train bound for Mannheim of Germany departing from the Xinzhu Railway Station in Xi'an, northwest China's Shaanxi Province. A China-Europe freight train fully loaded with 50 carriages of clothes, electronic components and electric appliance left the Xinzhu Railway Station in Xi'an City for Mannheim in Germany on Wednesday. (Photo by Tang Zhenjiang/Xinhua)

Photo taken on March 11, 2020 shows a China-Europe freight train bound for Mannheim of Germany departing from the Xinzhu Railway Station in Xi'an, northwest China's Shaanxi Province. A China-Europe freight train fully loaded with 50 carriages of clothes, electronic components and electric appliance left the Xinzhu Railway Station in Xi'an City for Mannheim in Germany on Wednesday. (Photo by Tang Zhenjiang/Xinhua)

A worker directs container hoisting operation at a logistic station in Xinzhu Railway Station in Xi'an, northwest China's Shaanxi Province, March 11, 2020. A China-Europe freight train fully loaded with 50 carriages of clothes, electronic components and electric appliance left the Xinzhu Railway Station in Xi'an City for Mannheim in Germany on Wednesday. (Photo by Tang Zhenjiang/Xinhua)

Aerial photo taken on March 11, 2020 shows a China-Europe freight train bound for Mannheim of Germany departing from the Xinzhu Railway Station in Xi'an, northwest China's Shaanxi Province. A China-Europe freight train fully loaded with 50 carriages of clothes, electronic components and electric appliance left the Xinzhu Railway Station in Xi'an City for Mannheim in Germany on Wednesday. (Photo by Tang Zhenjiang/Xinhua)