Photo shows the exercise books designed by teachers from the Tibetan Primary School of Hezuo for students to practice Tibetan and Chinese.Established in 1987, the Tibetan Primary School of Hezuo in Hezuo city, Gannan Tibetan Autonomous Prefecture in northwest China's Gansu Province is a six-year elementary school, which carries out bilingual teaching. [Photo/China Tibet Online]

Photo shows the bilingual textbooks for students in the Tibetan Primary School of Hezuo. Established in 1987, the Tibetan Primary School of Hezuo in Hezuo city, Gannan Tibetan Autonomous Prefecture in northwest China's Gansu Province is a six-year elementary school, which carries out bilingual teaching. [Photo/China Tibet Online]

Photo shows popular science books in Tibetan language in the library of the Tibetan Primary School of Hezuo. Established in 1987, the Tibetan Primary School of Hezuo in Hezuo city, Gannan Tibetan Autonomous Prefecture in northwest China's Gansu Province is a six-year elementary school, which carries out bilingual teaching. [Photo/China Tibet Online]

Photo shows happy Tibetan kids in the Tibetan Primary School of Hezuo. Established in 1987, the Tibetan Primary School of Hezuo in Hezuo city, Gannan Tibetan Autonomous Prefecture in northwest China's Gansu Province is a six-year elementary school, which carries out bilingual teaching. [Photo/China Tibet Online]

Tibetan pupils in the school dance team are rehearsing. Established in 1987, the Tibetan Primary School of Hezuo in Hezuo city, Gannan Tibetan Autonomous Prefecture in northwest China's Gansu Province is a six-year elementary school, which carries out bilingual teaching. [Photo/China Tibet Online]

Some pupils go to school by bike for the long distance away from home. To guarantee their safety, students are organized to go home together. Established in 1987, the Tibetan Primary School of Hezuo in Hezuo city, Gannan Tibetan Autonomous Prefecture in northwest China's Gansu Province is a six-year elementary school, which carries out bilingual teaching. [Photo/China Tibet Online]

Younger pupils go back home after school under teachers'guidance to guarantee their safety. Established in 1987, the Tibetan Primary School of Hezuo in Hezuo city, Gannan Tibetan Autonomous Prefecture in northwest China's Gansu Province is a six-year elementary school, which carries out bilingual teaching. [Photo/China Tibet Online]