There were many ways to obtain the source of best-selling novels. One way is to buy from online or physical bookstores to ensure that you get the latest and most accurate information. He could also look for online literature platforms such as Qidian Chinese Network, Xiaoxiang Academy, and other platforms that would regularly publish updates on best-selling novels. In addition, he could also follow some literary forums or social media accounts to keep up with the release of new books in the literary circle.