This photo taken on April 23, 2020 shows the first long rail transported to the Xierong paving base since construction of the Lhasa-Nyingchi section of the Sichuan-Tibet Railway was resumed this year. Construction of the Sichuan-Tibet Railway, the second railway to go into Tibet, has been making steady progress. Recently, 47 tunnels along the Lhasa-Nyingchi section of the railway have been bored, laying a solid foundation for the operation of the section. (Photo/Yuan Quan)