Surrounded by dense residential buildings, the Guangzhou No. 10 Middle School decided to "develop vertically" to solve the problem of insufficient sports field. (Photos: Xinhua)

With the financial support from the government and donations from its alumni, the school finally built up a sports field on top of its teaching building with all the necessary installations like protective net, artificial turf, illumination device, etc.

Students attend a training class at the sports field on top of a teaching building of Guangzhou No. 10 Middle School in Guangzhou, south China's Guangdong Province, Sept. 17, 2020.

Students attend a training class at the sports field on top of a teaching building of Guangzhou No. 10 Middle School in Guangzhou, south China's Guangdong Province, Sept. 17, 2020.

Aerial photo taken on Sept. 17, 2020 shows a view of the sports field on top of a teaching building of Guangzhou No. 10 Middle School in Guangzhou, south China's Guangdong Province.

Xu Yongzhong, a teacher of Guangzhou No. 10 Middle School, instructs students at the sports field on top of a teaching building of Guangzhou No. 10 Middle School in Guangzhou, south China's Guangdong Province, Sept. 17, 2020.

Aerial photo taken on Sept. 17, 2020 shows a view of the sports field on top of a teaching building of Guangzhou No. 10 Middle School in Guangzhou, south China's Guangdong Province.

Students attend a training class at the sports field on top of a teaching building of Guangzhou No. 10 Middle School in Guangzhou, south China's Guangdong Province, Sept. 17, 2020.

Aerial photo taken on Sept. 17, 2020 shows a view of the sports field on top of a teaching building of Guangzhou No. 10 Middle School in Guangzhou, south China's Guangdong Province.

Aerial photo taken on Sept. 17, 2020 shows a view of the sports field on top of a teaching building of Guangzhou No. 10 Middle School in Guangzhou, south China's Guangdong Province.