Aerial photo taken on Oct. 26, 2019 shows a road crossing a field in Medog County, southwest China's Tibet Autonomous Region. A rural highway and high-grade road network connecting towns and villages has been set up in Tibet. Strengthening the construction of rural transport infrastructure has changed people's life here. (Xinhua/Sun Fei)

Aerial photo taken on July 16, 2019 shows a view of the Lhasa-Nyingchi high-grade road, southwest China's Tibet Autonomous Region. A rural highway and high-grade road network connecting towns and villages has been set up in Tibet. Strengthening the construction of rural transport infrastructure has changed people's life here. (Xinhua/Zhang Rufeng)

Aerial photo taken on Oct. 27, 2019 shows the Polonggou grand bridge in Bomi County, Nyingchi of southwest China's Tibet Autonomous Region. A rural highway and high-grade road network connecting towns and villages has been set up in Tibet. Strengthening the construction of rural transport infrastructure has changed people's life here. (Xinhua/Sun Fei)

Herdmen cut meat in Lhasa, capital of southwest China's Tibet Autonomous Region, Dec. 31, 2020. A rural highway and high-grade road network connecting towns and villages has been set up in Tibet. Strengthening the construction of rural transport infrastructure has changed people's life here. (Xinhua/Jigme Dorje)