No time travel, no system, the protagonist with an IQ of 150 + a cousin who only has muscles. The sealed place where spiritual energy is extinct + dynasty competition + the only loophole in cultivating immortality.
Lin Qingyuan: I am a timid person and never fight an uncertain battle. If I want to kill you, it means that in my dreams, you have died countless times. I am familiar with every flaw, every breath, and even your begging for mercy before death.
So please go to hell. This is a "nuclear leveling" story about a max-level account in Novice Village (Gaowu World), playing with the rules with your brain, and using dreams to reduce dimensionality.