Retracing the Long March: What one US professor learned from its enduring spirit

To mark the 90th anniversary of the Long March victory, William N. Brown, a longtime Xiamen University professor who has lived in China for 38 years, journeyed along the historic route to see what kept the Red Army moving forward against impossible odds. Here are his reflections. (Produced by Zhan Huilan, Xie Runjia, Fu Junjie and interns Wang Shuyi, Pei Yi and Xie Wanxu)