Fitness contracts signed according to law are usually transferable. Article 545 of the Civil Code of People's Republic of China (PRC): A creditor may assign all or part of his creditor's rights to a third party, except in any of the following circumstances:
1, which is not transferable according to the nature of creditor's rights;
2, 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 is not effective for the debtor. The notice of assignment of creditor's rights shall not be revoked, except with the consent of the transferee.