According to Article 16 of the Measures for the Administration of Online Transactions: "When online commodity operators sell commodities, consumers have the right to return them within seven days from the date of receipt, without giving reasons, except for the following commodities:
(1) ordered by consumers;
(2) Fresh and perishable;
(3) Digital commodities such as audio-visual products and computer software downloaded or unpacked by consumers online;
(4) newspaper delivery. In addition to the goods listed in the preceding paragraph, other goods that are not suitable for return according to the nature of the goods and confirmed by consumers at the time of purchase are not returned without reason.
The goods returned by consumers shall be in good condition. Online commodity operators shall refund the price paid by consumers within seven days from the date of receiving the return. The return freight is borne by the consumer; If there are other agreements between online commodity operators and consumers, such agreements shall prevail. It can be understood that there is no need to explain the reasons other than the above-mentioned "exception clause".