Chinese SNS website "QQ" has drawn tens of thousands of visitors with photos of female middle school students bulling another girl.
In the three photos posted on the website last Tuesday, one student holds the girl's arms and another holds her chin. A third student stands on the girl's head. The victim is even being pulled on a leash tied to her neck.
All the photos show the face of the victim, who seems to have lost the will to resist. The attackers' faces are not shown.
After a huge public outcry, whoever posted the photos has withdrawn them and apologized.
Xian police are investigating.