Lince Railway in Inner Mongolia, which crosses more than 400 kilometers of desert, meets a sandstorm season every spring. Railway sand control workers here with the most difficult conditions all year round clean the tracks to prevent quicksand accumulation. (Photos: Xinhua; compiled by Liu Kechen)

Aerial photo taken on April 14, 2021, shows workers at the 360 Sand Control Station of Lince Railway making sand prevention grids.

Aerial photo taken on April 14, 2021 shows workers at the 360 Sand Control Station of Lince Railway cleaning up the sand on the railway line.

Aerial photo taken on April 14, 2021 shows workers at the 360 Sand Control Station of Lince Railway Line driving along the railway.

Aerial photo taken on April 14, 2021 shows workers at the 360 Sand Control Station of Lince Railway removing sand on the train tracks.

Aerial photo taken on April 14, 2021 shows workers at the 360 Sand Control Station of Lince Railway making sand prevention grids.

Aerial photo taken on April 14, 2021 shows workers at the 360 Sand Control Station of Lince Railway making sand prevention grids.

Photo taken on April 14, 2021 shows a worker at the 360 Sand Control Station of Lince Railway preparing tools at the station and about to go to the sand control point.