An aerial drone photo taken on May 24, 2024 shows China-Europe freight trains at a station yard of Suifenhe Railway Port in northeast China's Heilongjiang Province. Suifenhe Railway Port is an important port for the operation of China-Europe freight trains in northeast China. Staff members here are trying their best to reduce the average time for loading and grouping of these trains. [Photo/Xinhua] A gantry crane operates on a China-Europe freight train at a container payload switching yard of Suifenhe Railway Port in northeast China's Heilongjiang Province, May 25, 2024. [Photo/Xinhua] A gantry crane operates on a China-Europe freight train at a container payload switching yard of Suifenhe Railway Port in northeast China's Heilongjiang Province, May 25, 2024. [Photo/Xinhua] An aerial drone photo taken on May 24, 2024 shows a wheel crane switching container payload at Suifenhe Railway Port in northeast China's Heilongjiang Province. [Photo/Xinhua]