I Didn't Pass Subject Two, but You Asked Me to Fly a Mecha?

That day, giant mysterious creatures descended into the human world. The fighter plane exploded and fell like a meteor. The chariot is crushed into dust like a worm The sky and the earth were pale, artillery fire was flying, and it was like purgatory. The crystallized weapons of human technology are indestructible. When Nangong Lan, a junior high school student, was taking refuge, a beautiful officer dropped from the sky and stretched out her palm. "It's up to you to save the fate of mankind." Nangong Lan: "Damn it, sister, I haven't even fired a gun!" Beautiful officer: "I can teach you how to shoot a gun later. Now let's use it to decide the outcome. It is the final weapon of mankind." Nangong Lan: "Stop making trouble. I haven't passed subject two. You want me to pilot a mecha?" Beautiful officer: "Your brother's sister is trapped in the mecha now. She has a sweet appearance and is good at housework. She can enter the hall and the kitchen. She has a pair of ponytails on top and a horse on the bottom——" Nangong Lan: "Go to that mysterious creature! Eat my Lushan Shenglongba!" This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.