In fact, the contract creditor need not notify the debtor of the assignment.

实际上，合同的债权人无需将转让告知债务人。

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In chapter 7 lien on sub-freight and lien on sub-earning are analyzed, and the conclusion is that both liens are assignment of creditor 's right and not possessory liens.

第7章讨论分租运费留置权和转租收入留置权，结论为二者的性质是债权转让而非占有留置权。

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