The Age of Oxygen Deprivation

This novel is also known as Poor but Cool A very, very long blurb In 3222, a sudden cataclysm destroyed the world. Oxygen vanished from space, humanity mutated, and thousands of years of civilization were wiped out. By 3533, a new order had been rebuilt. Oxygen cost money, and the new humans were divided into castes. Xiao Sifang, a destitute refugee at the very bottom of society, had worked hard and strived to be the best since childhood. She was determined to end class oppression and achieve equality. But... Grandma: "We aren't going to stick our necks out, understand?" Little brother: "Waaah, Xiao Sifang, just drive me to my death! Then I won't have to worry about anything..." Friend: "Sigh, I know you're trying hard, but being poor is a fact of life. If you can't afford oxygen, you just have to accept your fate." Teacher: "Your ambitions reach the heavens, but your life is as fragile as paper. You never should have joined the combat division!" Xiao Sifang covered her ears, the fire in her heart blazing ever hotter. Hmph. This hopeless world has to be destroyed. Fake global savior and two-faced male lead x genuinely hardworking, absurdly powerful female lead Read at your own risk if that's your thing 1. Class conflict. Neither class is wholly praised nor wholly condemned. 2. A very conventional old-school level-up story. 3. An oxygen-free setting, mutated new humans, unconventional oxygen, and a mountain of original worldbuilding. 4. There's basically no romance. Next novel: The Archrival Elimination Method Ding ding ding, you there? You there? Say what you need to say. Don't ask if I'm here. Hehehe, I heard your fiance has been decided! Waaah, I heard it's me! Aww, you sound so reluctant. Get lost!!!!!!!!!!!!!!!! A colleague who had submitted a partner-matching application on the same day as her came over, beaming. "My fiance looks pretty good. I think we can make it through the six-month adjustment period. How about yours?" Meng Xi'an looked at the man across from her, happily sipping milk tea with one leg crossed over the other, and sneered. "Don't talk to me about that jerk." The Exotic Beast Protection and Management Bureau has a pair of archrivals who seriously undermine the workplace atmosphere. One is named Meng Xi'an, and the other is Chen Tang. At this point, fate has truly played a cruel joke on them. The two unlucky souls sat facing each other. They disagreed on just about everything, but agreed on one thing. Meng Xi'an began: "If they find out about this..." Chen Tang finished: "We won't be able to show our faces again." They shook hands. "Pleasure doing business with you." Theme: Knowledge changes your fate. Hard work brings brighter days.