During the performance of the contract, either party wants to change thecontract content or terms such as the term of the contract, projectcontent, cost, etc. or lf it is supplemented, a supplementary agreementshall be negotiated with the other party and a supplementary agreementshall be signed. Make sure. Otherwise, it is deemed that there has been nochange or supplementation, and both parties shall still perform inaccordance with the original contract.