Legal analysis: The two parties reach an agreement and the contract can be transferred. The conclusion of a contract, also known as conclusion, is the unity of dynamic behavior and static agreement of both parties to the contract. It includes not only the whole dynamic process of contact and negotiation between the contracting parties before reaching an agreement, but also the agreement formed after the two parties reach an agreement and determine the main terms or terms of the contract. Generally speaking, a contract is a legal act of both parties, and it can only be established if both parties reach an agreement through consultation. That is to say, concluding a contract is a dynamic process, and no matter how an agreement is concluded, it must go through two stages: offer and acceptance.

Legal basis: Civil Code of People's Republic of China (PRC).

Article 543 The parties may modify the contract through consultation.

Article 544 Where the parties have not expressly agreed on the contents of the contract modification, it is presumed that the contract has not been modified.

Article 545 Creditors may assign all or part of their creditor's rights to a third party, except in any of the following circumstances:

(a) according to the nature of the creditor's rights shall not be transferred;

(two) according to the agreement of the parties shall not be transferred;

(3) It shall not be transferred according to law.

If the parties agree that the non-monetary creditor's rights cannot be transferred, they may not confront a bona fide third party. If the parties agree that the creditor's rights are not transferable, they may not oppose a third party.

Article 546 Assignment of Creditor's Rights Without notifying the debtor, the assignment shall not have effect on the debtor.

The notice of assignment of creditor's rights shall not be revoked, except with the consent of the transferee.

Article 547 Where a creditor assigns a creditor's right, the assignee obtains the subordinate rights related to the creditor's right, except that the subordinate rights belong exclusively to the creditor.

The transferee's acquisition of subordinate rights is not affected by the failure to go through the transfer registration formalities or transfer possession of subordinate rights.

Article 548 After receiving the notice of assignment of creditor's rights, the debtor may claim rights against the assignee in respect of the assignor's defense.

Article 549 Under any of the following circumstances, the debtor may claim set-off from the assignee:

(1) When the debtor receives the notice of assignment of creditor's rights, the debtor enjoys the creditor's rights against the assignor, and the debtor's creditor's rights expire before or at the same time as the assigned creditor's rights;

(2) The debtor's creditor's rights and the assigned creditor's rights are based on the same contract.

Article 550 The performance expenses increased due to the assignment of the creditor's rights shall be borne by the transferor.

Article 551 Where the debtor assigns all or part of the debt to a third person, it shall obtain the consent of the creditor.

The debtor or a third party may urge the creditor to give consent within a reasonable time. If the creditor fails to express it, it shall be deemed as disagreement.

Article 552 Where the third person agreed with the debtor to join the debt and informed the creditor, or the third person indicated to the creditor that he was willing to join the debt, and the creditor did not explicitly refuse within a reasonable period, the creditor may request the third person to bear joint and several debts with the debtor within the scope of the debt he is willing to bear.

Article 553 Where the debtor transfers the debt, the new debtor may claim the defense of the original debtor against the creditor. Where the original debtor enjoys the creditor's rights, the new debtor may not claim offset from the creditor.

Article 554 Where the debtor transfers the debt, the new debtor shall bear the subordinate debt related to the main debt, except that the subordinate debt belongs exclusively to the original debtor.

Article 555 A party may, with the consent of the other party, assign its rights and obligations under the contract to a third party.

Article 556 Where the rights and obligations under a contract are transferred at the same time, the relevant provisions on the transfer of creditor's rights and debts shall apply.