Lawyer, when is the best time for a lawyer to intervene in a casino offense?

Hello, criminal cases in general the earlier the lawyer intervention the better! The so-called opening a casino, refers to the opening and operation of casinos, providing places and paraphernalia for gambling, for others to gamble in them, and I profit from the behavior. According to China's "criminal law" relevant provisions: open a casino, shall be sentenced to less than three years of fixed-term imprisonment, detention or control, and punishable by a fine; the circumstances are serious, shall be sentenced to more than three years to less than ten years of fixed-term imprisonment, and punishable by a fine." If conditions permit, the lawyer is best to intervene on the date of the first interrogation or compulsory measures taken by the investigating authorities, the lawyer can, according to the facts and the law, put forward the suspect's innocence, misdemeanor, or mitigation, exemption from criminal responsibility of the materials and opinions, to safeguard the suspect's procedural rights and other legitimate rights and interests.