Although the Article 26 of the Property Law is required for indication delivery,the rules are unclear,which has triggered a heated discussion regarding to the application of this provision both in practice and in academic field.Their key debate is how to confirm the nature of the right to "the transfer of requesting the third party to return the original item",and whether it is necessary of the directed delivery to take the"notice of assignment"into force.In the practice of transaction,there are three forms of claim for return:the right of real claim,the right of obligatory claim and the concurrence.All these forms of claim should take the notice of assignment into force.