"Three big mountains", Mount Kilimanjaro and the big mountain of college entrance examination
Parabola, hyperbola and the missing string in Cheng Qinghe's mind
English words, ancient poems and Tang Jin's poems will be discussed next time
The extremely smart yet confused Cheng Qinghe & the lucky but always missed Tang Jin
Intention: There is no limit to the sea of learning and hard work, as soon as you open your eyes, you will learn