Pupils in China have been forced to carry books on their heads during class as a new rule posed by the teachers to help them maintain good postures.
The children work in a classroom with books laying on top of their heads at a primary school in Nantong, Jiangsu province of eastern China.
The teachers came up with the unconventional technique after some of their students developed short-sightedness due to bad sitting positions.
Short-sightedness is a major issue among Chinese students.
More than half of the country's population under the age of 18 now suffer from the condition, also known as myopia, with high school students being hit the hardest.
Figures released by CCTV show that 81 per cent of Chinese teenagers between 16 and 18 years old have the eye condition; while 14.5 per cent of six-year-olds already need to wear glasses.
The viral video captured a group of fourth-grade students being forced to sit in class while trying to keep books falling from their heads.
A headteacher from the school, who was unidentified, explained that it was a new way of training to prevent bad postures from damaging the students' eyesight.
'[The children] were practising writing new words after class,' she told the press. 'We often train the students to maintain good postures whilst they are working.'
'But some kids wouldn't listen and they developed short-sightedness,' the teacher added.
'If you sit up straight, the book wouldn't fall. And it helps improve their postures and habits.'
The news comes as pupils across China have gone back to school after spending more than three months at home as the country continues to ease travel restrictions.
Monday saw tens of thousands of students in their final year of middle and high schools in Shanghai and Guangzhou returned to the campus while graduating students in high schools in Beijing also resumed classroom study.
All schools and universities must impose strict preventative measures to stop the disease from spreading, including giving out free face masks, disinfecting the campus and setting up quarantine areas.
Pictured, students wearing face masks have a class at a middle school in Shanghai on April 27
Another trending video showed Chinese children wearing 'one-metre hats' with extended sticks on both sides to remain safe distance with classmates on their first day back to school after three-month coronavirus lockdown.
The students are required to have no physical contacts with their classmates while keeping their hats untouched.
The principal, known by his surname Hong, said that the home-made hats would help the students keep social distancing with each other.
'We encourage our students to wear the one-metre hats to stay at least one metre (three feet) away from each other,' Mr Hong told the press.