A teenager in China punched his teacher after she allegedly held the class back from lunch break.
In the clip, the student was seen banging his fist on his desk in frustration during her lesson. Seconds later, he rushed to the teacher's lectern and started swinging his fist at her.
Other students were stunned by the sudden attack.They watched on as their classmate rained punches on their teacher, which resulted in several cuts and bruises around her eyes and cheeks.
Several students jumped in to restrain the teen and managed to stop him. The incident is currently under investigation.
After viewing the clip, the reactions from Weibo users were mixed. While some of them expressed outrage, others empathised with the student over his violent outburst.