该小说有两个时空的故事，第一个是现实故事，讲述数学家王二的故事；第二个是古代故事，讲述了李靖、红拂、虬髯公的故事。现实故事中，王二在北京一所大学教数学，成天想入非非。他最大的理想就是证得费尔马定理，虽然这件事本身很无趣，但是最有价值，因为这样会让领导喜欢。王二证出费尔马定理以后，他果然成了领导上的“人瑞”。当了“人瑞”的王二成了体制之内的人，再也不敢想入非非，他自己也成为无趣之人。（The novel tells stories that happened in two space-times: the story in reality is about the math teacher Wang Er; and the ancient story is about what happened to Li Jing, Hong Fu, and Qiu Rangong. In reality, Wang Er was a math teacher at a university in Beijing and he always daydreamed. His dream was to prove Fermat's Theorem. This matter itself, although very boring, was the most valuable, because it would make him be appreciated by his leader. After Wang Er proved the Fermat's Theorem, he indeed became the favorite of his leader. With this identity, he entered the system, but he dared not imagine any more, and also became a boring person.)...