Guaranty is an important legal mechanism for securing the realization of creditor's rights. Determining the validity of guaranty contracts and managing the guaranty period are key issues in practice.

The independence of the guaranty contract is key to determining validity. If the principal contract is invalid, the guaranty contract is also invalid, unless otherwise provided by law. After the guaranty is invalidated, the liability of the parties depends on their respective fault.

The suretyship period is a critical time limit. If the creditor fails to claim rights within the suretyship period, the guarantor may be released from suretyship liability.

The suretyship period is a critical time limit. If the creditor fails to claim rights within the suretyship period, the guarantor may be released from suretyship liability.