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Su Wanqing, who was ranked first in grade, was asked to make up math lessons by Fu Hanye, who was ranked last. She thought he was a scumbag who couldn't even learn basic questions, until she found his report card from that year - perfect score in math, third in grade. The school bully who pretends to be a scumbag is a really cold school bully. It has been a long time coming from a trigonometric function. "Fu Hanye, you hide it well." "It's not deep, I just like you secretly."

The down-and-out daughter sacrifices herself to feed a tiger for revenge, but she doesn't know that she is already a bird in the cage that has been planned for a long time by the crazy group of people in power.