Please recommend a tablet that costs about 500 yuan, mainly used to read e-books in the PDF-format.

For a tablet that costs around 500 yuan to read e-books in PDF-format, you can refer to the following models: 1. Huawei MatePadPro: This tablet is equipped with a Kirin 990 processor and a 120Hz screen that supports functions such as reading PDFs and taking notes. There was also Huawei's own smart recognition technology that could automatically turn pages and recognize handwriting. 2 Xiaomi Tablet 5: This tablet is also a cost-effective product equipped with the Snapdragon 660 processor to support functions such as PDF-reading and video playback. There was also a 79-inch AMOLED screen with a resolution of 1280x800. 3. Glory Tablet V6: This tablet is equipped with a Huawei Kirin 810 processor that supports functions such as reading PDFs and taking notes. There was also a 101-inch AMOLED screen with a resolution of 1920x1080. 4. Legend Pad5: This tablet is equipped with the Snapdragon 765G processor to support functions such as PDF-reading and video playback. There was also an 84-inch IPs screen with a resolution of up to 1280x800 and a higher screen quality. These tablets all support reading and writing in PDF-files, and the price is around 500 yuan. You can choose a tablet that suits you according to your needs and budget.