When you were five years old, your trembling cry came from the kindergarten: "I don't want to sit at the same table as Yan Zi." When I was nine years old, in the elementary school classroom, you raised your chin proudly and said to me contemptuously: "You are so proud to sit at the same table with me!" When you were sixteen years old, in the high school classroom, you looked at the certificate of the Mathematical Olympiad competition in your hand and beat your chest and feet: "Why did you have to give birth to me to be so good?" And, at the age of eighteen, in the university study room, you looked at me and hesitated to speak. .
Conception: