Both the separation theory adopted in the decisions on disputes over VAM contracts and the contracting fault theory imply the distinction between mandatory norms, which is quite different from the traditional classification of mandatory norms. By synthesizing these two theories, a contract in the sense of process can be divided into three basic stages: contracting, validity and performance, and interfaces between contract law and other departments of law should be extended from single interface (validity interface) to all interfaces. Correspondingly, mandatory norms on contract can be divided into the contracting norms, validity norms and enforceability norms, so as to pursue the integration and maximization of the values of the contract law and other departments of law. Based on the concept of all interfaces, the court should apply the final rule, the remedy rule and the possible rule as the methods of explaining mandatory norms in the judgment of contract disputes involving cross-departments of law, so as to reduce as more as possible the compulsion on the contract on the premise of not detracting the effect of other laws, update the existing classification and interpretation rules of mandatory norms as well as the grounds for the judgment of contract disputes involving cross-departments of law. |