I Am a Brick in the Nation's Wall

[Upcoming story: My Mecha Shop Among the Stars. If you’re interested, feel free to add it to your favorites!] Blurb: The combat robot Chang Jie fled to avoid being scrapped, and accidentally fell onto Earth during her escape. Seeing zombies swarming everywhere, she eagerly integrated into human society and slaughtered them. She originally thought she was just an ordinary “person” in the apocalypse. But somehow, she ended up connected with the government. A zombie horde is about to attack the northern mega-base? Northern mega-base: Requesting reinforcements! Government: Send Chang Jie. A sea monster is about to break through the coastal city’s defenses? Coastal city: Requesting reinforcements! Government: Send Chang Jie. A mutated giant plant has appeared in the central hinterland? Central hinterland: Requesting reinforcements! Government: Send Chang Jie. Later, the various regions stopped asking for reinforcements. They said, “Send Chang Jie!” Chang Jie: ? “Am I not doing a good enough job pretending to be human? Why are you acting like this?” - Later, a Zombie King capable of commanding every zombie in the world appeared out of nowhere. The Zombie King was so powerful that even Chang Jie had no choice but to choose mutual destruction. After the great battle ended, everyone stared in shock at Chang Jie’s body, which was only half intact and made of machinery. So she... wasn’t human. Government: Save her! I don’t care if she’s human, save her! - #With a body of steel, protect our homeland and mountains!# #Gather the capable from across the land, save our most irreplaceable ally!# Upcoming story blurb: Huo Hanfu, a powerful plant user in the apocalypse, was ambushed and died at the jaws of a zombie. When she opened her eyes again, she had become a penniless outcast at a military academy, despised by everyone. And the poor thing was studying mecha engineering, a major that devoured both money and effort. Huo Hanfu: Maybe I should just switch to plant studies and muddle along? She thought as she controlled plants to repair a mecha. But when she asked, she found out that switching majors meant paying the difference in tuition! - At the military academy league, most of the mechas on the First Federal Army team bore a green leaf emblem. Students from the other military academies mocked them. “What, did you lose so badly you had to change your school emblem?” “Changing your emblem won’t fool me. I can still tell you’re from the First Federal Army!” “A new emblem won’t help. You’ll still lose!” Then they got thoroughly beaten by the mechas with the green leaf emblems. Huo Hanfu followed behind them, showing off as she repaired the wrecked mechas, then stamped each one with a green leaf emblem. Huo Hanfu: That’ll make my mecha shop famous. The First Federal Army team, watching Huo Hanfu repair the enemy mechas: ??? Boss! The competition is broadcast across the entire star system. Winning would make you even more famous! Huo Hanfu: !!! Without missing a beat, she turned around and smashed those mechas to pieces again. The other academies: Furious! But too afraid to say anything! Important notes: 1. The female lead is a robot from the stars who came to Earth. 2. The setting is the apocalypse, and the female lead is a robot, not a human. 3. This is a gender-bender story with a female top. Please keep that in mind. 4. Thank you, everyone. Theme: Born for our country, protect our country.