【正文】 s rights of the debtor are matured before or at the same time as the transferred creditor39。s rights, and if the debtor has creditor39。s rights, except for cases the accessory rights exclusively belonging to the creditor.Article 82 After a debtor has received a notice on the transfer of creditor39。(2) the transfer is not allowed according to the agreement between the parties。s action if the debtor causes losses to the creditor by transferring its property at a low price evidently unreasonable and with awareness of the transferee.The scope for exercising the right of rescission is limited to the creditor39。s action. The creditor may also apply to a people39。s rights or transfers gratis its property and thus causes losses to the creditor, the creditor may apply to a people39。s rights enjoyed by the creditor. The expenses required by the creditor39。s name, except for the creditor39。s creditor39。s rights and thus causes losses to the creditor, the creditor may apply to a people39。s interest.Any additional expenses caused to the creditor by the debtor39。s interest.Any additional expenses caused to the creditor by the debtor39。(3) falling into business discredit。s demand for the discharge if the latter fails to meet its liabilities as contracted.Article 67 Where the parties are in debt to each other and there is a time order for them to discharge the debts, the party which is the next to discharge the debts has the right to reject the discharge demanded by the party which is the first to meet its liabilities but fails to meet them. The party which is the next to discharge the debts has also the right to reject a corresponding discharge demanded by the party which is the first to meet its liabilities but fails to meet them as contracted.Article 68 The party which ought to discharge its debts first may suspend the discharge if it has truthful evidence to prove that the other party falls under any of the following situations:(1) business operations seriously deteriorating。 and the original price shall be the fulfilling price if the price goes down.Article 64 Where the parties agree that the debtor shall discharge the debts to a third party and where the debtor fails to do so or fails to meet its liability as contracted, the debtor shall bear the liability for breach of contract to the creditor.Article 65 Where the parties agree that a third party shall discharge the debts to the creditor and where the third party fails to do so or fails to meet its liability as contracted, the debtor shall bear the liability for breach of contract to the creditor.Article 66 Where the parties are in debt to each other and there is no time order for discharging the debts, they shall meet their respective liabilities simultaneously. Either party has the right to reject the other party39。 and(6) in case of unclear charge for the performance, the charge shall be borne by the party fulfilling the obligations.Article 63 For a contract with the governmentset price or governmentguided price as the fulfilling price, where the government price is adjusted within the delivery period of the contract, the price at the time of delivery shall be the fulfilling price. Where an overdue delivery occurs and the price goes up at the delivery, the original price shall be the fulfilling price。(4) in case of unclear time limit for the performance, the debtor may fulfill its obligations at any time, and the creditor may demand the fulfillment at any time, while giving the debtor necessary time to make preparations。 where the payment is in real estate, the contract shall be performed in the place where the real estate is located。(2) in case of unclear price or remuneration stipulation, the contract shall be performed in accordance with the market price in the place of contract performance at the time of the making of the contract, or according to the governmentset price or governmentguided price if it is so required by law。 or(2) the party with the right to rescind waivers its right by express indication or by its own act after it was aware of the matter for the rescission.Article 56 An invalid or rescinded contract does not have legal binding force from the outset. If a part of a contract bees invalid without affecting the validity of the other parts, the other parts remain valid.Article 57 If a contract bees invalid, or is rescinded or terminated, the validity of its independently existing clauses pertaining to the settlement of disputes shall not be affected.Article 58 After a contract bees invalid or is rescinded, any property obtained under the contract shall be returned. If it is impossible or unnecessary to return the property, pensation shall be made at an estimated price. The party at fault shall pensate the other party for the loss caused by the fault. If both parties have faults, they shall bear their respective responsibilities.Article 59 If the parties impair by malicious conspiracy the interests of the State, of the collective or of a third party, the property they have thus obtained shall be returned to the State, the collective or the third party.Chapter IV Fulfillment of the ContractArticle 60 The parties shall fulfill fully their respective obligations as contracted.The parties shall observe the principle of good faith and fulfill the obligations of notification, assistance and confidentiality in accordance with the nature and aims of the contract and trade practices.Article 61 For a contract that has bee valid, where the parties have not stipulated the contents regarding quality, price or remuneration or the place of performance, or have stipulated them unclearly, the parties may supplement them by agreement。s court or an arbitration institution to alter or rescind the contract.Where the request of the party is an alteration to the contract, the people39。s court or an arbitration institution to alter or rescind any of the following contracts:(1) any contract which is made und