Ninety years after the Red Army completed the Long March, our series explores the journeys shaping China today. 

In Zheng'an, a once-impoverished mountain county in southwest China's Guizhou Province, that journey began with workers bringing their guitar-making skills home. Today, their hometown makes instruments played around the world. 

CGTN's Zhu Siying discovers how they built an unlikely industry, and are now finding a voice of their own.