A group of old photos of Zhangjiakou, Hebei, 110 years ago were taken in June 1909 by Chamberlin, Thomas Chowder, an American geologist. Born on September 25, 1843 in Matong, Illin...

Share a group of old photos of Zhangjiakou, Hebei, 100 years ago. This group of photos is from an old postcard published in 1920-1940. The photo source is the University of Souther...

On January 4, 1909, an American geologist, Zhang Bolin, and his son, Luo Lin, set out from Chicago and arrived in Shanghai on February 2 of the same year. During his stay in China,...