Zombies don't need to rest

【Help! ! ! 】
[I have become a zombie! 】
. . . . . .
"If there is such a person, he can't sleep, keeps awake all the time, can't bear children, has no thoughts about this, has great strength and doesn't know pain, and only needs to inject a cheap nutrient solution every day to live forever , what did you think of?"
"It's a worker whose cost is lower than that of a machine, the best quality weapon of war, and endless money. Wait, what are you doing?"
"I'm going to see why the street lights outside are so dark"