Mathematics examination is a difficult subject every year, but some students are 150 every year. Take Sichuan as an example. In 2022, there were 8 students who got full marks in the mathematics college entrance examination, while there are 540,000 students currently taking the college entrance examination. So do mainlanders. There are no more than 20 people who get full marks in mathematics in Anhui college entrance examination, but the number of people who take the college entrance examination in the whole province is 600 thousand. According to this ratio, it is still difficult to get full marks in mathematics in the college entrance examination.