Study hard early and cultivate excellent students. According to the platform of inquiring great mathematicians, the goal of the early series of mathematics diligence is to provide a series of mathematics topics, covering rich knowledge points and difficulties, and gradually improve the difficulty of the topics. In the early series of mathematics diligence, the topics are often complicated, and the comprehensive application of multiple concepts and skills needs to be considered, which requires high problem-solving ability and thinking ability, so it is the most difficult one in the early series of mathematics diligence.