For many children in the remote Qumarleb county of Yushu Tibetan autonomous prefecture, Northwest China's Qinghai province, preschool learning was a luxury.
Located in the source region of the Yellow River, the county has an average altitude of more than 4,500 meters and a population of 47,000.
With parents traveling to graze herds for months at a time, these nomadic children for many years faced difficulties going to school, especially kindergarten.