Aerial photo shows a China-Europe freight train departing from Wujiashan railway container center station in Wuhan, central China''s Hubei Province, May 9, 2020. A China-Europe freight train carrying anti-epidemic supplies on Saturday left Wuhan, once hit hard by COVID-19, heading for Belgrade, the capital of Serbia. The train departed Wujiashan railway container center station at 10 a.m., loaded with 294.42 tonnes of anti-epidemic supplies such as masks, protective suits, goggles and medical devices, according to the China State Railway Group Co., Ltd. (Xinhua/Xiao Yijiu)

Aerial photo shows a China-Europe freight train departing from Wujiashan railway container center station in Wuhan, central China''s Hubei Province, May 9, 2020. A China-Europe freight train carrying anti-epidemic supplies on Saturday left Wuhan, once hit hard by COVID-19, heading for Belgrade, the capital of Serbia. The train departed Wujiashan railway container center station at 10 a.m., loaded with 294.42 tonnes of anti-epidemic supplies such as masks, protective suits, goggles and medical devices, according to the China State Railway Group Co., Ltd. (Xinhua/Xiao Yijiu)

A China-Europe freight train departs from Wujiashan railway container center station in Wuhan, central China''s Hubei Province, May 9, 2020. A China-Europe freight train carrying anti-epidemic supplies on Saturday left Wuhan, once hit hard by COVID-19, heading for Belgrade, the capital of Serbia. The train departed Wujiashan railway container center station at 10 a.m., loaded with 294.42 tonnes of anti-epidemic supplies such as masks, protective suits, goggles and medical devices, according to the China State Railway Group Co., Ltd. (Xinhua/Xiao Yijiu)