The Female Assassin Pretends to Be a Lamb in the Campus

She was the world's number one genius assassin who struck fear with just a mention of her name. Ruthless and merciless, she killed without leaving a trace. Yet she was deceived and used by the organization, and met a tragic end.
When she was reborn, she became a fat and stupid female student.
Fat?
She stunned everyone after losing weight!
Stupid?
The president of Peking University personally came to recruit her!
Useless?
Hacker idols begged to call her goddess!
Medical giants knelt to become her minions!
Even mercenaries chased her shouting "Boss"! Math geniuses clung to her asking for solutions!
She just wanted an ordinary life, yet accidentally rose to be number one again, and gained a cunning big shot who protected and secretly pursued her.
The male and female leads fought like cats and dogs, both incredibly sly~
[Dual clean, sweet doting, face slapping, falling from grace, big shots...]
[The female lead is calm, strong, a genius who acts before speaking.]
[The male lead is cunning, careful, jealous, and dotes on his wife.]
No silly behavior, safe to indulge~

PS. I DO NOT OWN THIS STORY