Can tell you a story about Nanjing Normal University.
2 months ago there were posters all over the school gates that the small girl was hit by a foreign guy who rode an illegal scooter on university campus.
Looking further into that neither the girl nor the guy could be identified. Uni has gate CCTV 24/7 - nothing.
Over 2000 foreigners study in that uni and live on that campus - nothing.
xici.net and other local forums - nothing.
Ninghai road police station asked for explanation - nothing.
Clean-ups followed.

Clearly, it was a setup. Pretext to get the bikes off campus. My wife's bike's legal and plated. You have to see Bao'an's faces every time she rides through the uni gate for class.

This story is the same pattern.