Zhao Lixian, male, Han nationality,1born in April 1984, is from Jining, Shandong. As of June 2023, 10, 19, he was a famous gold medal teacher in high school.

He said that there are two necessary processes to lay a good foundation in mathematics: one is to learn and accept "from thin to thick"; Digestion and refining "from coarse to fine" [2].