I Play a Supporting Role in a Novel

This is a very funny novel. The protagonist, as an ordinary person, accidentally enters an AI novel and becomes a supporting character in the novel. In the novel, he grows up in a humble way, picks up the protagonist's wool, and travels around the world of cultivating immortals. In reality, his novel changed his life. How does this real world exist? Why does the world in the novel reflect reality? Some people will laugh and cry, and some people will cry and laugh. I just hope you can laugh all the time. This slow-burning funny novel is worth reading.