The aloof military doctor arrives at the unit, and the tough guy can't sit still.

Female soldier, sweet romance, strong leads, revenge, both leads are virgins, alternate universe.
In her previous life, Xia Qiuran married Zhao Feng and spent her whole life as a nanny for his family of more than ten people. When her own mother fell ill in her later years and was in unbearable pain, she bought two packets of paracetamol and sent them to him. When Zhao Feng returned, he slapped her.
"They've treated the Zhao family like a bank, giving away medicine worth almost two yuan just like that."
"You've lived off my food and drink my water your whole life, never worked a single day, and you still dared to take my money to buy medicine for your mother? Get the money back right now!"
Xia Qiuran refused to be beaten up. From then on, Zhao Feng proposed a split-the-bill lifestyle. Xia Qiuran didn't earn money and could only eat cornbread every day. She sat at the same table with Zhao Feng, watching him eat and drink well. He wouldn't even give her the leftover meat dumplings to feed the dog.
When Xia Qiuran opened her eyes, she returned to the time before her engagement to Zhao Feng. Everyone advised her to marry Zhao Feng, saying that he had a secure job and his family was wealthy.
Only someone with a screw loose in their head would go and do menial tasks in the army.
Xia Qiuran ran away from home overnight and found the army.
Lu Zhenghan, dressed in military uniform with his back ramrod straight, asked, "Reservists have no military status, no official rank, and receive a monthly stipend of 20 yuan, but they have to do the dirtiest and most tiring work in the army. Are you willing?"
"I do."
Xia Qiuran earns her own money and spends it as she pleases. She chats and laughs with her colleagues every day, and most importantly, she no longer has to worry about anyone else's feelings.
Unafraid of hardship and daring to risk their lives, they are always at the forefront of disaster relief efforts.
Gradually, they acquired military status and established military positions. They even developed new drugs to save millions of people during the pandemic.
Reborn into this world, Xia Qiuran only wants to work hard and strive for a better future for herself.
But... the way someone was looking at him was getting weirder and weirder.