Reborn in the 1970s: Sorry, Being a Genius Is Just the Bare Minimum

[1970s Era + System Space + Research Genius + Technical Expertise]

At the end of the Republic of China era, genius physicist Pei Zhen is assassinated on her way back to China and dies at sea along with the scientific researchers aboard the ship.

When she opens her eyes again, she is in a System space.

A voice sounds: "Host, do you want to save your brother? Then trade your studies for it."

Pei Zhen agrees without hesitation.

When she returns, it is already 1978 in China.

Armed with max-level technological knowledge, she finds her brother, who has already been reborn into a new life with a new family.

The first time Pei Shuo sees her, he grabs her hand, eyes reddening, and says, "You... you're my little sister, aren't you?!"

The entire Pei family is stunned. Since when did Pei Shuo have such a beautiful little sister?

Later, they discover that this little sister not only has bright eyes, pearly white teeth, and skin as smooth as jade, but is also so clever it's unbelievable.

Later still, a top-secret document is delivered to Pei Shuo. "Comrade Pei, it seems your sister... has solved the problem that's been troubling us for ten years?"

Pei Shuo: ???

The entire Pei family: ???

The whole factory is stunned: ???

A short skit:

Pei Shuo's colleague comes over for dinner and sees Pei Zhen reading the Chinese Journal of Physics.

Colleague: "Engineer Pei, does your sister understand this?"

Pei Shuo, looking proud: "She taught herself."

Colleague: "This journal is pretty difficult. Plenty of college students can't understand it."

Without looking up, Pei Zhen says calmly, "The derivation in this paper is wrong. I was just about to write to the editorial department."

Colleague: !!!

Pei Shuo: (looking proud, though he didn't understand a single word)