At the beginning of the story, we already know that Pi has had a new life in Canada, so therefore he must be saved. The last part, "Benito Juarez Infirmary, Tomatlan, Mexico", tells that after Pi was rescued, two Japanese chased him to investigate the reason for the catastrophe. Yann Martel then explains his opinions on reality, novels and reading through the mouth of Pi: “Telling something --- using words, English or Japanese --- isn't it already a kind of invention? Isn't just looking at this world already a kind of invention?" The world isn't just the way it is. It's how we understand it, isn't it? And by understanding something, we bring something to it, right? That's not how we make it life a story?" At the end of the novel, Pi tells another story, which is so cruel that it does not correspond to the "Happy Ending" in the last sentence of the first part. In this story, Pi's mother and four real people fall into the lifeboat in place of Pi and three animals, and in the end we find that only Pi survived. Not only does he have to watch his mother get killed, but he also has to eat human bodies to keep himself alive like that cook. Before Yann Martel wrote this novel, he had already written two unknown books. He had tried many different jobs, which put his life in an awkward situation. He said this book came about because he was hungry in "Author's Note", so he went to India to seek energy and inspiration. However, the publication again found itself in a difficult situation, because it was rejected by many famous publishers; also, due to hunger, he had a better understanding of the hardships of lower-class people and the deception and planning of human beings. The author provides this cruel story to make readers have another understanding of the first story: Richard Parker is exactly Pi's alter ego. ago. Behind the same law of the jungle, instead of saying that animals are metaphors for humans in the first story, it is better to say that people in the second story have different animal characteristics. Consequently, when Pi asked the two Japanese which story they preferred, they both agreed with “the story with the animals,” “and so it is with God.” It is said to be “a novel that makes you believe in God”.”.