The story is about the Lisu brothers life,they live on the Biluo Snow Mountain, near the Nu River: old brother Ci Lihua is 17 years old, young brother is Jia Lihua 10 years old. Their father died when young brother was six months old, mother remarried under the mountain, she did not take them away. The brothers live with grandmother,and uncle on the mountain. There is no way to go to school on the mountain, the children's time is used to work at home. In the hardship condition, they also have simple and pleasure life.