A man was arrested after slapping his son's classmate and getting into a fight with the child's grandfather in eastern China.

CCTV footage filmed in the city of Nanjing in Jiangsu Province on November 8 shows an angry man named Lu suddenly slapping a boy onto the floor while saying "Have you heard me? Will you hit other people in the future?"

The boy's 64-year-old grandfather named Zu then threw a plastic stool and a wooden chair at Lu and fought with him.

Lu was seen pushing Zu onto the floor when Zu was about to throw the wooden chair at him.

According to reports, Lu's son was hit by Zu's grandson in kindergarten when they were fighting over a toy and Lu's son suffered injuries to his scalp.

So Lu went to Zu's home to ask for justice and then had a fight with Zu.

Zu later called the police. Zu's grandson suffered injuries to his external ear and face and Zu had fractures to his fibula.

Police have arrested Lu and the case is under further investigation.

The video was provided by local media with permission.

11月8日，江苏南京，鲁某某（男，33岁，某医院社会聘用制人员）因当天上午其儿子在幼儿园与同班男童争抢玩具时被对方戳破头皮，到对方家中讨要说法。期间，鲁某某情绪激动，用手击打该男童面部，致其仰面倒地。该男童祖父祖某某（男，64岁）先后持塑料椅、木椅与鲁某某发生肢体冲突，被鲁某某推倒致腿部骨折。目前，鲁某某因涉嫌故意伤害被公安机关依法刑事拘留，案件正在进一步侦办中。
事发视频显示，11月8日19时27分许，一男子对一名男童批评教育时，突然一巴掌将男童扇倒在地。男子反复问道：“还打不打人？”，男童从地上站起回答称：“不打了。”随后，男童爷爷不满孙子被打，与男子之间发生推搡，男童爷爷先拿一把蓝色塑料椅子砸向男子，又再次拿另一把木椅子欲砸向男子时，被男子推倒在地。
被打孩子的妈妈唐女士称，事发时她和丈夫不在家，事发后，孩子爷爷立马报了警，孩子被医院诊断为外耳挫伤，面部挫伤。爷爷在该院的检查报告单显示为“右侧腓骨上段骨折”。