### Chinese: 正版书籍，电子发票，售后保障，有任何问题可咨询在线客服。
### English: Genuine books, electronic invoices, after-sales guarantee<v>,</v> if you have any questions, please consult online customer service.
### Errors: There is a minor fluency/punctuation error at "," within <v></v>.

### Improved English: Authentic books, electronic invoice, quality after-sale services, please consult online customer service if you have any question.
