legal ground
Article 43 of the Public Security Administration Punishment Law
Those who beat others or intentionally hurt others' bodies shall be detained for more than 5 days 10 and fined for more than 200 yuan and less than 500 yuan; If the circumstances are minor, they shall be detained for less than 5 days or fined for less than 500 yuan.
Under any of the following circumstances, the offender shall be detained for more than 10 and less than 15, and fined for more than 500 yuan 1000 yuan:
(a) gang beating, hurting others;
(2) Beating or injuring the disabled, pregnant women,/kloc-persons under 0/4 years of age or persons over 60 years of age;
(3) Beating or injuring others for many times or beating or injuring more than one person at a time.