Legal analysis: it can be returned and refunded, because plastic packaging is not a part of book products, but is basically added to meet the needs of logistics and sellers and buyers. It can be regarded as an envelope or a courier box. The seller should simply not want to toss and turn, but the reason for finding it is far-fetched. If some books have typographical errors, you can also find a publishing house to exchange or return them for free. If I don't open them, how can I lead them to have problems?

Legal basis: 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) Digital commodities such as audio-visual products and computer software ordered by consumers; (2) Fresh and perishable; (3) Consumers download or unpack packages online; (4) newspaper delivery.

In addition to the goods listed in the preceding paragraph, other goods that are not suitable for unreasonable return according to the nature of the goods and confirmed by consumers at the time of purchase.