A team of five grade-one high school students in Tibetan Middle School of Luqu county in Gannan Tibetan autonomous prefecture of Northwest China's Gansu province are building and testing their trash-sorting robot in school on Saturday. 

Besides robot building, students can also choose other courses, including traditional Tibetan dance, the traditional Tibetan musical instrument Mandolin, Thangka painting, robots building, piano, soccer, basketball, volleyball, ping-pong, martial arts, Chinese and Tibetan calligraphy, Chinese poetry recital, and so on.