I grew up in Guangzhou, and excellent education is also quite famous here. Friends who have thought about tutoring basically know it. I still remember when I was in my second and third year of high school, several friends around me went to a cram school for Youyou, saying that they wanted to do well in the college entrance examination and go to a good university. Everyone told my mother and enrolled me in a cram school for excellent math teaching. At first, others made up for it, but after I went, I found that I could learn something in an excellent education. I have always been at the middle level in mathematics, but after cramming for more than one semester, I am definitely at the upper-middle level.