Constructors work in a tunnel of the new Taiyuan-Jiaozuo high-speed railway in central China's Henan Province, July 25, 2020. The track laying work of the railway finished on Saturday. The railway is expected to be put into service at the end of this year. [Photo/Xinhua]

Constructors work in a tunnel of the new Taiyuan-Jiaozuo high-speed railway in central China's Henan Province, July 25, 2020. The track laying work of the railway finished on Saturday. The railway is expected to be put into service at the end of this year. [Photo/Xinhua]

Constructors work in a tunnel of the new Taiyuan-Jiaozuo high-speed railway in central China's Henan Province, July 25, 2020. The track laying work of the railway finished on Saturday. The railway is expected to be put into service at the end of this year. [Photo/Xinhua]

Constructors work in a tunnel of the new Taiyuan-Jiaozuo high-speed railway in central China's Henan Province, July 25, 2020. The track laying work of the railway finished on Saturday. The railway is expected to be put into service at the end of this year. [Photo/Xinhua]

Constructors work in a tunnel of the new Taiyuan-Jiaozuo high-speed railway in central China's Henan Province, July 25, 2020. The track laying work of the railway finished on Saturday. The railway is expected to be put into service at the end of this year. [Photo/Xinhua]

Aerial photo taken on July 25, 2020 shows the new Taiyuan-Jiaozuo high-speed railway in Jiaozuo, central China's Henan Province. The track laying work of the railway finished on Saturday. The railway is expected to be put into service at the end of this year. [Photo/Xinhua]