My father Ma Haide: From American doctor to Red Army medic

In 1936, American physician George Hatem went to northern Shaanxi to treat the Red Army, adopting the Chinese name Ma Haide. Hatem marched at night across frozen rivers and saw the Long March reach its end. He dedicated his life to serving China. Watch his son, Zhou Youma, share the story. (Produced by Fu Junjie, Zhan Huilan, Qiao Wai, Fan Liuyi, Zhang Jian, Ni Tao, Li Mingzhi and interns Liang Mingxuan, Fu Shiyu, Xin Jingyi, Wang Shuyi and Jiang Jingya)