What are the legal rules for pricking her ass with a needle?

Needling her ass violates the provisions of Article 43 of the Law on Public Security Administration Punishment. If she is suspected of intentional injury, she should bear the responsibility of public security administration according to law.

If it is a public place, its behavior violates the provisions of Article 26 or Article 44 of the Law on Public Security Administration Punishment, and it is suspected of causing trouble or indecency, it should also be investigated for public security management responsibility according to law.