Twenty-one years ago, as the construction of the Qinghai-Xizang Railway was in full swing, Xinhua photojournalist Chogo took a vivid photo at the construction site in Damxung County on March 30, 2005. In the picture, two girls were sitting beside a rail with bright smiles on their faces. Now, one of the girls, Tatso, is already a mother of three when she meets with Xinhua photojournalists again and talks about the great changes the railway has brought to the snowy plateau.
