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第六章 合同的变更和转让
Chapter VI
Modification and Assignment of Contracts
第五百四十三条 当事人协商一致，可以变更合同。
Article 543
The parties may modify a contract upon agreement through consultation.
第五百四十四条 当事人对合同变更的内容约定不明确的，推定为未变更。
Article 544
Where an agreement between the parties to modify the content of a contract is
unclear, it is presumed that the contract is not modified.
第五百四十五条 债权人可以将债权的全部或者部分转让给第三人，但是有下列情形之一的除外：
Article 545
A creditor may assign his claim in whole or in part to a third person, except
that a claim may not be assigned where:
（一）根据债权性质不得转让；
(1) it is not assignable by virtue of its nature;
（二）按照当事人约定不得转让；
(2) it is not assignable as agreed by the parties; or
（三）依照法律规定不得转让。
(3) it is not assignable in accordance with law.
当事人约定非金钱债权不得转让的，不得对抗善意第三人。当事人约定金钱债权不得转让的，不得对抗第三人。
Where the parties agree that a non-pecuniary claim may not be assigned, such an
agreement may not be asserted against a bona fide third person. Where the
parties agree that a pecuniary claim may not be assigned, such an agreement may
not be asserted against a third person.
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