Because for the college entrance exam mathematics, these eight books are what they test.
For this reason, after Su Yan transferred into this body, she basically went through these eight required texts along with the past five years of real college entrance exam questions in a few days.
She took the test paper that Ji Xingyu had just completed and looked it over again.
Then, she said
"Regarding the knowledge point of sufficient and necessary conditions, judgement of true propositions and converse propositions, function analysis, look up these few points in the book by yourself."
Ji Xingyu looked at Su Yan with a strange expression
"Aren't you going to teach me?"
Su Yan paused, then thought carefully
"These points can be understood by reading the book, no need for teaching."
She said this very seriously, not joking at all.
Ji Xingyu felt... he might have found a fake teacher.
Following, he pointed his finger at the last major question.
"This question?"