Both Zhang Qian (who started the Silk Road) and Su Wu (who was captured by the Xiongnu people for 19 years) lived among the Xiongnu people during this time period. On our website is a picture book about Zhang Qian as well as a short fictional story about when he, his wife, and his son meet the Chinese emperor for the first time (it's one of the short stories in "Stories of Kids in China's History")