Su Nanzhi looked down at the problem for a while, drew three auxiliary lines with her pencil, and then circled two triangles, saying, "First, you prove these two triangles are congruent, then you can deduce the angles are equal, and based on the problem you get…."
Within a few words, the problem became clear.
Du Zijin: "…."
It took her quite a while to respond before looking up at Su Nanzhi: "Zhizhi, why don't you check out Teacher Jiang's competition class? It's a worthy investment, even if you don't do well in the competition, at least you can be one who receives Teacher Jiang's careful instruction and close contact every day."
Su Nanzhi: "…."
That must be your own idea.
"No thanks, I'm better off here."
Su Nanzhi sat down and started working on problems. The workbook she had just received not long ago was now nearly half completed. At this rate, she estimated that she would need to buy a new one in about one or two weeks.
