Solve the problem of changing the Chinese name of calibre to Pinyin 1. Preference-Save the book to disk-Save the cover separately, use OPF file to save metadata, and convert non-English characters into corresponding English characters. 2. When transferring books from Calibre, use "Save to Disk" instead of "Send to Device", and select the storage directory of the device through the path (Kindle is a document. Success ~ it's so convenient to manage books with Calibre! ! !