According to your question, is it illegal to help people launder money The subjective aspect of this crime is intentional, that is, the perpetrator knowingly conceals the source and nature of the illegal proceeds of crime, conceals their origin and nature, and deliberately acts for the sake of interests, and hopes that this result will occur. The judgment of "knowingly" in criminal intent should be determined by combining subjective and objective factors such as the defendant's cognitive ability, contact with other people's criminal income and its proceeds, the type and amount of criminal income and its proceeds, the way of conversion and transfer of criminal income and its proceeds, and the defendant's confession. Under any of the following circumstances, the defendant may be determined to know that it is the proceeds of crime and its proceeds, unless there is evidence to prove that he does not know: (1) Knowing that another person is engaged in criminal activities and assisting in the conversion or transfer of property; (2) Assisting in the conversion or transfer of property through illegal means without justified reasons; (3) Purchasing property at a price significantly lower than the market price without justified reasons; (4) Assisting in the conversion or transfer of property without proper reasons and charging a "service charge" significantly higher than the market price; (5) Assisting others to deposit large amounts of cash in multiple bank accounts or transfer between different bank accounts frequently without proper reasons; (6) Assisting close relatives or other persons with close ties to convert or transfer property that is obviously inconsistent with their occupation or property status; (7) Other circumstances in which the perpetrator can be identified as knowing. Note: If the defendant mistook the proceeds of a certain predicate crime of money laundering (Article 191) and its proceeds for other proceeds of crime within the scope of other predicate crimes of this crime, it will not affect the determination of the crime of money laundering "knowingly".