Located in Chengde City, Hebei Province, Saihanba sits 450 kilometers to the north of Beijing. The place is covered with snow seven months a year. It used to be a freezing, barren desert plagued by sandstorms. However, it has been turned into the world's largest plantation that covers an area of nearly 75,000 hectares. Thus, it is called a "green miracle."

Chen Yanxian was one of the first batch of workers in Saihanba forest farm. Inspired by the story of Liang Jun, the first female tractor driver after the founding of the People's Republic of China, 19-year-old Chen and her five roommates decided to ditch the college entrance examination and take part in the construction of Saihanba.