Legal analysis: if a bank lends money in violation of regulations, the guarantor knows it is illegal before making the guarantee, and should bear the corresponding guarantee responsibility. However, if the parties to the main contract collude to defraud the guarantor to provide a guarantee, or the creditors of the main contract resort to fraud or coercion to make the guarantor provide a guarantee against his true meaning, the guarantor shall not bear civil liability.

Legal basis: Civil Code of People's Republic of China (PRC).

Article 148 If a party causes the other party to commit a civil juristic act against its true meaning by fraudulent means, the aggrieved party has the right to request the people's court or an arbitration institution to cancel it.

Article 149 If a third party commits a civil juristic act against its true meaning due to fraud, and the other party knows or should know about the fraud, the defrauded party has the right to request the people's court or an arbitration institution to cancel it.