My husband was criminally detained for gambling on WeChat with a friend. He was a manager there and his friend

You can fight for a suspended sentence. It is recommended to ask a lawyer to intervene early and try to get bail pending trial. The law stipulates: "Criminal Law of the People's Republic of China"

Article 303: The crime of gambling; the crime of opening a casino for the purpose of profit, gathering people to gamble or making gambling a business, shall be punished by a prison sentence of not more than three years Fixed-term imprisonment, criminal detention or surveillance, and shall also be fined.

Whoever opens a casino shall be sentenced to fixed-term imprisonment of not more than three years, criminal detention or surveillance, and shall also be fined; if the circumstances are serious, he shall be sentenced to fixed-term imprisonment of not less than three years and not more than 10 years, and shall also be fined.