Traveling Through the World of Immortality, Can You Become Stronger by Learning Mathematics?

An unexpected experience gave Lin Qingshu, a high school student, an unexpected opportunity to live forever. He thought it was a cool fighting magic, but instead he saw two children talking to each other about the multiplication table. Their strength increased so much that they uprooted a weeping willow... Lin Qingshu said: "Isn't this right? Where is the promised cultivation of immortality?"