The attack occurred as the children were being escorted to class after their morning playtime.
The assailant was apprehended by the kindergarten teachers and a security guard.
Chinese police have said Liu is the surname of the woman responsible for the gruesome killing rampage.
Her age has also been revealed as 39.
Local media reports have stated two of the woman’s victims have died as a result of the savage attack.
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But local police have denied these claims, urging people not to spread “rumours” online.
The woman is believed to have told police she was mistreated by the Chinese government.
But it remains a mystery why she targeted these young, innocent children.
The Chongqing region is in the south-west of China, 1105 miles away by road to Beijing.
China has experienced a scourge of unrelated knife attacks in kindergartens and schools in recent years.
Violent crime is rare in China compared with many other countries, especially in major cities where security is tight, but there has been a series of knife and axe attacks in recent years, many targeting children.
Such attacks are often blamed on people with mental illness or who have personal grievances.
Gun controls are tight in China, meaning knives are typically used.
In September, China executed a man convicted of killing nine students and injuring 11 in a knife attack at a middle school in the central province of Shaanxi.
A shocking video has surfaced on social media of the woman being arrested by police.
An unknown number of children were taken to hospital for trauma care following the stabbing, according to reports.
In further disturbing footage, young children can be seen covered in blood as they are rushed to trauma units – some on hospital trolleys and others in the arms of adults.