Roll! People Are Ruthless and Don't Talk Much. They Kill Enemies and Do Scientific Research with One Hand.

[Apocalyptic Time Travel] + [Seventies] + [Dual Personality] + [System] + [Strong Woman] After self-destruction in the apocalypse—— Li Li was bound to a system and transported directly back to his original world - the impoverished 1970s. Fortunately - this time she finally escaped from the dark laboratory. Unfortunately - he was almost wiped out at the beginning and landed directly in the box. She had no choice but to cooperate with Tiandao, and since then she has embarked on the road of catching human traffickers, fighting enemy agents, building machines, and conducting scientific research. Her series of research and development results have prompted scientific research institutes, military factories, and various research institutes to directly compete for people. Through hard work, he directly joined the army and found a job, and became the lap of the father of the country. As the truth of the past life is revealed step by step. A mysterious enemy organization? The biological mother with a secret? And... A certain officer - after waiting for you for two lifetimes, do you really not want to give me a title? —— The main character is a soft and cute foodie who is naturally dark, blinking innocent eyes and digging the deepest hole. Sub-personality - He is ruthless and doesn't talk much. He must take revenge when he has a grudge. He will never end well in two lives. He cooperates with Heaven just to find the truth. [This story is fictitious. Please do not compare it with history. Thank you for watching.