A female tyrant in the military!

The richest man's father: You have to go to the army whether you want to or not, otherwise, I'll pretend I don't have a daughter!

Best friend: What? Your dad told you to join the army for two years, how did you become a top soldier?

Commander: Zhang Nan, you are truly a sharp blade of the nation, and I am proud to have a soldier like you.

King of Soldiers: In front of Captain Zhang, we are all paper tigers!

Enemy: You're asking for death! How did you manage to provoke Zhang Nan, this living devil?

......

Zhang Nan was once a top-notch soldier, but an unexpected time travel leads her to rise through the ranks and become the strongest soldier!