After I Die and Become a Zombie, I Hand Myself over to the State

[The ratings have just been opened, please refer to the reviews] Three days after my death, I faked my corpse. It's not a zombie, it's a sane zombie with a sinister system tied into it. System: "In 24 hours, a global zombie virus will break out." I didn't hoard food or hide. I changed into clean clothes, walked into the police station, and knocked on the door: "Hello, comrade, I became a zombie after my death. I want to hand myself over to the country." The military major general stared at me for ten minutes, then solemnly saluted: "The ninth branch is established. Codename: Yama." Since then, there has been another wonder on the border of China: An army of 300,000 zombies lined up neatly, carrying red flags on their shoulders, guarding the country's gates. Cross the border to kill the Sakura Kingdom, and kill the corpse emperor with one "Chinese" sword. The lone army went on an expedition to the nuclear-armed country, went straight to the blood clan's lair, and crushed the underground blood river. Foreign media reported wildly: "This is unscientific!!" Lin Huai looked at it and smiled slightly: "Sorry, zombie civil servants, they have their own dragon vein system." Advancement of cultivation: Purple Zombie → White Zombie → Green Zombie → Mao Zombie (power awakening) → Blood Zombie →... → Zombie Ancestor! No heroine, no harem, pure fun to the end. In this life, I am China's Yama, not a deserter at the end of the world.