Tanalei Don't compare American books and Chinese books.
Chinese authors are usually paid by word count and monthly views, so filler, unnecessary text and repeating information is rampant to amp up word count. If you've ever reading anything by Fengling Tianxia (Realms of the Firament, Otherworldly Evil Monarch). He loves to make every each character repeat the same information with slightly different wording sometimes entire chapters of 2000-4000 words contain little to nothing in new content. He is still insanely popular in China like top 20 authors).
American authors are paid a sum of money upfront when they sign a contract with a publisher, and through royalties. Royalties are the amount of money paid to an author for each book sold, which will usually be a percentage of the book’s sale price. so they don't need to amp up word count like Chinese books.