In the 1940s, two young Americans - a physicist and a cowboy - came to China. They fell in love with each other and also with the country, both throwing themselves into the campaign of building a new China.
Their son, Yang Heping, who was born and brought up in China, sits down with China Daily to share the most extraordinary stories of his family and all the excitement and confusion they felt as witnesses to China's growth.
Related story: American calls Chinese birthplace his real home
Reporter: Christie Lee
Video: Christie Lee
Studio director: Cong Fangjun & Zhang Xiao
Videographer: Lou Yi & Lin Hanqing
Producer: Flora Yue
Photos provided by Yang Heping