"It was disgusting! I went to the toilet, tilted my head, and saw that thing!" said a female student from Beihang University.

She was referring to advertisements placed in womens toilets in Beihang, the People's University and other institutions:

Replacement hymens: old price RMB 688, new price RMB 268.

When a Beijing News journalist called the company that placed the ads, the saleman said that a lot of students had already ordered hymens, and that they could offer wholesale prices for bulk orders.

The Beijing News story is reproduced on Xinhua (in Chinese) here.

Thanks to J for the tip-off.