Chongqing City Banan District police said the children were slashed as they walked back to class after their morning exercises at Yudong New Century Kindergarten about 9.30 a.m. local time.
School security guards attempted to restrain the woman while bystanders began to take matters into their own hands, kicking the woman once she was subdued.
More than a dozen children have been injured after a woman with a knife launched an attack at a kindergarten in China.
She has since been arrested.
Images and video footage circulating on social media showed a scene of chaos, as several children in blood-soaked clothes - some with knife wounds on their faces - walked out from the kindergarten in a daze.
Man Who Broke His Hip Wins Mega Millions Lottery With Hospital Pool
The odds of winning a jackpot remain abysmal at 1 in 302.5 million for Mega Millions and 1 in 292.2 million for Powerball . The lucky victor or winners hit a jackpot worth $1.54 billion in estimated annuity value (or $878 million in cash).
Police investigate suspicious package addressed to Robert De Niro
Each package had six Forever stamps on the envelope as well. "Let's say for example, that maybe these bombs aren't operational". According to sources, the explosive device was a PVC pipe with a timer (probably a digital alarm clock) to run the detonator.
Tottenham fans slam Ben Davies on Twitter for his performance
The problem is when you are so good, you dominate the game and create the chances and you can't kill the game. But we played to keep possession [towards the end] and not to be aggressive in the last third.
All victims have been hospitalized and receiving treatment, according to police.
In April, a 28-year-old man killed nine middle school students as they were returning home in one of the country's deadliest knife attacks in recent years.
Knife attacks targeting schoolchildren are not uncommon in China, which has seen a slew of deadly incidents over the past few years.
A spate of killings of school children in 2010 prompted a response from top government officials and leading many schools to add gates and security guards.
The motive for the attack is unclear, though some reports on social media say the woman had a grievance against the government.