If there is evidence to prove that the parties simply don't know that it is illegal income, then it naturally does not constitute a crime, and they can fight for legal non-prosecution;
No. 2__, if you have any questions, don't sue.
If there is not enough evidence to prove that the parties have committed the crime of harboring, they can dispute and not prosecute.
3__, discretionary not to prosecute.
If it does constitute this crime, but the degree of participation is low, the role is small, the profit is small, and the parties have pleaded guilty, returned stolen goods and made restitution, truthfully confessed the facts of the crime, etc., which constitutes a "minor crime", it may win the discretion not to prosecute.
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To sum up, it is possible to win non-prosecution because of suspected concealment of crimes.
However, it should be noted that the procuratorate has strict review and consideration on whether to prosecute.
If you want to get better results for yourself or your family and friends, you cannot do without the guidance and help of professional criminal lawyers.