He knows that his grades in primary and secondary schools are not good. Although he has ambition to enter the field of science, he has self-knowledge and knows that he must do what he can. He made an in-depth self-analysis of his study: although his total score is average, he is very interested in mathematics and physics, and he can't catch up with others in other aspects. Only by setting goals in mathematics and physics can he have a way out. After establishing this goal, he adopted an efficient directional learning method, that is, he found out what can guide his knowledge to a deeper level, abandoned everything that overburdened his mind and kept away from the main points, so that he could concentrate all his wisdom and strength on the selected goal.

He once said: "Mathematics can be divided into many specialized fields, and each field can spend our short life. Physics is also divided into many fields, and the life span of each field is short. In this field I studied, I not only learned to identify things that can lead to deeper knowledge, but also threw away many other superficial things and many things that filled my head and distracted my main goal. "

This is the key to his success.