A knife-wielding man slashed 22 children and an adult at an elementary school in central China.
The man attacked the children at the gate of a school in Chenpeng village in Henan province.
Police arrested a 36-year-old man, identified as villager Min Yingjun.
It did not give further details of the extent of the injuries.
There have been a series of attacks on schools and schoolchildren around China in recent years.
A Guangshan county hospital administrator said the man first attacked an elderly woman.
He was subdued by security guards who have been posted across China following a spate of school attacks in recent years.
The hospital administrator said there were no deaths among the nine students admitted.
He said that two badly injured children had been transferred to better-equipped hospitals outside the county.
It was not clear how old the injured children were, but Chinese primary school pupils are generally 6-11 years old.
A notice posted on the Guangshan county government's website confirmed the number of injured and said an emergency response team had been set up to investigate the attacks.
No motive was given for the stabbings.