I Have a Magic Book

Traveling through the magical world, Lin Yong accidentally got a strange book. It called itself the "Book of the Demon God" and tempted him to sign a contract every day. After the contract was completed, Lin Yong unexpectedly discovered that this book was like a game mall, with all kinds of magic products, a lucky wheel, and an evil lottery treasure box. He even reminds himself from time to time: "As long as you spend money, you can become stronger!