Aerial photo taken on Feb. 16, 2020 shows a China-Europe freight train waiting for departure at Zhengzhou Station, central China's Henan Province. Loaded with 615.8 tons of goods, the freight train is the first China-Europe freight train in Zhengzhou leaving for the central Asia following the conclusion of the Spring Festival holiday. (Xinhua/Li An)

A China-Europe freight train is ready to depart at Zhengzhou Station, central China's Henan Province, Feb. 16, 2020. Loaded with 615.8 tons of goods, the freight train is the first China-Europe freight train in Zhengzhou leaving for the central Asia following the conclusion of the Spring Festival holiday. (Xinhua/Li An)

Aerial photo taken on Feb. 16, 2020 shows a China-Europe freight train departing from Zhengzhou Station, central China's Henan Province. Loaded with 615.8 tons of goods, the freight train is the first China-Europe freight train in Zhengzhou leaving for the central Asia following the conclusion of the Spring Festival holiday. (Xinhua/Li An)

A China-Europe freight train is ready to depart at Zhengzhou Station, central China's Henan Province, Feb. 16, 2020. Loaded with 615.8 tons of goods, the freight train is the first China-Europe freight train in Zhengzhou leaving for the central Asia following the conclusion of the Spring Festival holiday. (Xinhua/Li An)

Aerial photo taken on Feb. 16, 2020 shows a China-Europe freight train departing from Zhengzhou Station, central China's Henan Province. Loaded with 615.8 tons of goods, the freight train is the first China-Europe freight train in Zhengzhou leaving for the central Asia following the conclusion of the Spring Festival holiday. (Xinhua/Li An)