Both parties to the contract must fulfill their obligations under the contract, right?

Post-contractual obligation is a legal term based on the principle of good faith. Post-contractual obligations mean that after the termination of contractual rights and obligations, the parties should follow the principle of good faith and fulfill their obligations of notification, assistance and confidentiality in accordance with trading habits.

The principle of good faith is the basic principle of civil law, which requires people to be honest and trustworthy in civil activities, correctly exercise their rights and fulfill their obligations.

Principle of consideration

(1) The consideration need not be equal, or the consideration need not be equal. This principle has been shaken in modern Britain because it may lead to obvious injustice.

(2) Past considerations are invalid. According to the general principle, the behavior before acceptance is the past consideration, or the past consideration is the consideration that has been fulfilled before the conclusion of the contract.

(3) The performance of the original obligation cannot be regarded as the consideration of the new commitment.