He Laoshi, Ph.D., graduated from Peking University, majoring in mathematics; At present, he teaches in four famous universities in Shanghai, and is a famous math teacher with 10 years of teaching experience. After years of research, he created the "He's Teaching Method", which can improve the math scores of junior and senior high school students by more than 50 points in one month. He Laoshi proved the "Goldbach conjecture" that has puzzled the mathematical community for more than 300 years, and also solved many worldwide mathematical problems. He Laoshi has brought out more than 1000 people who scored full marks in the senior high school entrance examination, and countless students scored more than 140 in the senior high school entrance examination. He Laoshi is known as the best math marking teacher in the contemporary era!