This aerial photo taken on Feb. 9, 2023 shows a China-Europe freight train leaving Dulaying Station in Guiyang, southwest China's Guizhou Province. More than 35,000 tonnes of goods has been sent through China-Europe freight train service in Guizhou since its operation on Nov. 18, 2021. (Xinhua/Liu Xu)

This aerial photo taken on Feb. 9, 2023 shows a China-Europe freight train at Dulaying Station in Guiyang, southwest China's Guizhou Province. More than 35,000 tonnes of goods has been sent through China-Europe freight train service in Guizhou since its operation on Nov. 18, 2021. (Xinhua/Liu Xu)

This aerial photo taken on Feb. 9, 2023 shows a China-Europe freight train at Dulaying Station in Guiyang, southwest China's Guizhou Province. More than 35,000 tonnes of goods has been sent through China-Europe freight train service in Guizhou since its operation on Nov. 18, 2021. (Xinhua/Liu Xu)

This aerial photo taken on Feb. 9, 2023 shows a China-Europe freight train loading containers at Dulaying Station in Guiyang, southwest China's Guizhou Province. More than 35,000 tonnes of goods has been sent through China-Europe freight train service in Guizhou since its operation on Nov. 18, 2021. (Xinhua/Liu Xu)

A China-Europe freight train leaves Dulaying Station in Guiyang, southwest China's Guizhou Province, on Feb. 9, 2023. More than 35,000 tonnes of goods has been sent through China-Europe freight train service in Guizhou since its operation on Nov. 18, 2021. (Xinhua/Liu Xu)

A China-Europe freight train is seen at Dulaying Station in Guiyang, southwest China's Guizhou Province, on Feb. 9, 2023. More than 35,000 tonnes of goods has been sent through China-Europe freight train service in Guizhou since its operation on Nov. 18, 2021. (Xinhua/Liu Xu)