Is it legal to have overlord clause in the supplementary agreement in the developer's contract?

Legal analysis: Whether the overlord clause in the developer's contract is legal depends on whether it violates the specific provisions of the law. If it is violated, it is invalid. If there is no violation, it is legal and effective for both parties to sign with their true will.

Legal basis: Article 502 of the Civil Code of People's Republic of China (PRC), a legally established contract shall come into effect upon its establishment, unless otherwise stipulated by law or agreed by the parties. In accordance with the provisions of laws and administrative regulations, if the contract should go through the approval procedures, according to its provisions, if the failure to go through the approval procedures affects the effectiveness of the contract, it will not affect the validity of the obligation clauses such as approval and other relevant clauses in the contract. If the party that should go through the formalities for approval fails to perform its obligations, the other party may request it to bear the responsibility for violating its obligations. In accordance with the provisions of laws and administrative regulations, the modification, assignment and dissolution of the contract shall be subject to the approval of the preceding paragraph.