CHINA - It was a photo shared by millions of netizens.
In it, a kindergarten teacher is seen holding up a child by his ears.
The picture and a related video clip were taken at a privately owned kindergarten in Wenling, Zhejiang, a province on China's east coast.
It was originally uploaded to the teacher Yan Yanhong's instant-messenger account and it soon went viral.
The police in Wenling posted a statement on Sina Weibo, a popular micro-blogging website, on Thursday saying that Ms Yan and another teacher, Ms Tong Qingqing, who allegedly took the picture, have been detained, China Daily reported.
Ms Yan had uploaded other photos. One showed a boy's mouth sealed with packaging tape, with the caption "you deserve it". Another showed a boy upside down in a bin, with the caption "I threw him in".
Ms Yan told the Qiangjiang Evening News that the photo of the boy being held by the ears was taken a month ago "just for fun".
She said: "I asked my colleague, Tong Qingqing, to take them. She didn't agree to do so in the beginning and I explained that it was just for fun and that it would take just one moment.
"I just thought it was so funny. The other day, when I was chatting with a parent online, I couldn't help sharing it with him. I didn't expect such strong reaction from parents."
A subsequent investigation found that Ms Yan did not have a teacher's certificate, Hong Kong daily South China Morning Post reported.
Ms Wang Xiaoyan, deputy director of the National Centre for Educational Development Research, said that teachers without proper certificates may not understand child development, adding that Ms Yan possibly did not realise that what she was doing constituted child abuse.
Both teachers were sacked by the kindergarten on Tuesday after local media made inquiries.
Get The New Paper for more stories.