This is the classification number, using the China Book Classification compiled by Lai Yongxiang. 889: Western Novel 3705: It is the author's code name. If the author is a foreigner, the code is taken from the first four English letters of the author's surname, and each English letter has a number, for example, "A, H and O are represented by 0; B and p stand for 1 and so on. 2010-07-0715:18: 32 supplement: 0: A, o, H 1: B, P 2: C, K 3: D, T 4:. Z 2010-07-0715: 211supplement: for example, J.K. Rowling, the author of Harry Potter, uses the first four letters of the author's surname (Rowling) to code, and also

Reference: The above answer is my own experience (Vinci Cheung), and it is impossible to find it on any webpage or book! All rights reserved, if you need to reprint, you must list the source!

What about other English letters? What number does it represent?