A constructor works at the construction site of the Tongjiang super major bridge, which is part of the capacity expansion and upgrading project for the Jiamusi-Tongjiang Railway, in northeast China's Heilongjiang Province, June 25, 2026. Upon completion, the project will boost the transport capacity of the Tongjiang Port, a key gateway along the eastern corridor of the China-Europe freight train service, with train handling capacity expected to increase by more than three times. (Xinhua/Zhang Tao)

An aerial drone photo shows the construction site of the Tongjiang super major bridge, which is part of the capacity expansion and upgrading project for the Jiamusi-Tongjiang Railway, in northeast China's Heilongjiang Province, June 25, 2026. Upon completion, the project will boost the transport capacity of the Tongjiang Port, a key gateway along the eastern corridor of the China-Europe freight train service, with train handling capacity expected to increase by more than three times. (Xinhua/Zhang Tao)

A drone photo shows the construction site of the Tongjiang super major bridge, which is part of the capacity expansion and upgrading project for the Jiamusi-Tongjiang Railway, in northeast China's Heilongjiang Province, June 25, 2026. Upon completion, the project will boost the transport capacity of the Tongjiang Port, a key gateway along the eastern corridor of the China-Europe freight train service, with train handling capacity expected to increase by more than three times. (Xinhua/Zhang Tao)

This photo shows the construction site of the Tongjiang super major bridge, which is part of the capacity expansion and upgrading project for the Jiamusi-Tongjiang Railway, in northeast China's Heilongjiang Province, June 25, 2026. Upon completion, the project will boost the transport capacity of the Tongjiang Port, a key gateway along the eastern corridor of the China-Europe freight train service, with train handling capacity expected to increase by more than three times. (Xinhua/Zhang Tao)

An aerial drone photo shows the construction site of the Tongjiang super major bridge, which is part of the capacity expansion and upgrading project for the Jiamusi-Tongjiang Railway, in northeast China's Heilongjiang Province, June 25, 2026. Upon completion, the project will boost the transport capacity of the Tongjiang Port, a key gateway along the eastern corridor of the China-Europe freight train service, with train handling capacity expected to increase by more than three times. (Xinhua/Zhang Tao)

A constructor works at the construction site of the Tongjiang super major bridge, which is part of the capacity expansion and upgrading project for the Jiamusi-Tongjiang Railway, in northeast China's Heilongjiang Province, June 25, 2026. Upon completion, the project will boost the transport capacity of the Tongjiang Port, a key gateway along the eastern corridor of the China-Europe freight train service, with train handling capacity expected to increase by more than three times. (Xinhua/Zhang Tao)

A constructor works at the construction site of the Tongjiang super major bridge, which is part of the capacity expansion and upgrading project for the Jiamusi-Tongjiang Railway, in northeast China's Heilongjiang Province, June 25, 2026. Upon completion, the project will boost the transport capacity of the Tongjiang Port, a key gateway along the eastern corridor of the China-Europe freight train service, with train handling capacity expected to increase by more than three times. (Xinhua/Zhang Tao)

An aerial drone photo shows the construction site of the Tongjiang super major bridge, which is part of the capacity expansion and upgrading project for the Jiamusi-Tongjiang Railway, in northeast China's Heilongjiang Province, June 25, 2026. Upon completion, the project will boost the transport capacity of the Tongjiang Port, a key gateway along the eastern corridor of the China-Europe freight train service, with train handling capacity expected to increase by more than three times. (Xinhua/Zhang Tao)

A drone photo shows the construction site of the Tongjiang super major bridge, which is part of the capacity expansion and upgrading project for the Jiamusi-Tongjiang Railway, in northeast China's Heilongjiang Province, June 25, 2026. Upon completion, the project will boost the transport capacity of the Tongjiang Port, a key gateway along the eastern corridor of the China-Europe freight train service, with train handling capacity expected to increase by more than three times. (Xinhua/Zhang Tao)