Hypoxia era

In 3222, the world suffered a sudden and devastating catastrophe, interstellar deoxygenation, human alienation, and thousands of years of civilization were destroyed. In 3533, the new order was rebuilt, oxygen charges were charged, and new humans were divided into threes, sixes, and nines.Xiao Sifang, a refugee at the bottom, has worked hard since childhood to be the first, determined to eliminate class oppression and achieve equality.However——Grandma: "We don't want to do this, you know?" It's reality, you have to accept your fate if you don't have money to supply oxygen." Teacher: "Your heart is higher than the sky, your life is thinner than paper, you shouldn't be in the combat department!" Xiao Sifang covered his ears, and the flame in his heart became more and more intense.Humph, this hopeless world must be destroyed.It's just that she never expected that she was almost taken a step ahead!Xiao Sifang was frightened and angry, and rushed to hug the interstellar holy father who would pour out everything he found from the ruins of the catastrophe, "You breathe pure oxygen every day, calm down!" Cen Bo smiled and touched her head. "Where there is destruction, there will be new life." "Let's play freely, without restraint." When he said this, his eyebrows and eyes were so gentle that Xiao Sifang burst into tears.Open your eyes and see, stupid people, it is not I who should be stopped, but your beloved Holy Father!Pseudo-global godfather double-faced male protagonist VS real hardworking female protagonist with explosive force value 1. Class antagonism, not fully affirming or completely denying any class 2. Very vulgar ancient upgrades 3. Anaerobic environment, new alienation Human beings, oxygen is unconventional, and the private setting is like a mountain 4. There is basically no emotional line Xiao Bamian, Lu Yi, C, D, E