A hilarious conversation between two people (a hilarious joke)

Sub: A crash occurred and the index plummeted.

Parent: Please quote the closing price.

Subs: Mathematics 56, Chinese 43, Physics 52, Politics 49, Chemistry 58.

Father: What happened? The plate is full of ink. The trend was good before, but this time there were so many shorts.

Sub: From a fundamental analysis, I failed to pay attention to the lectures in class because I was studying the stock market; from a technical analysis, this time the invigilation was too strict and various rescue measures could not be introduced