Just look at how miserable a person can be, just look at Luo Qingyu, you will know how miserable a person can be. When the prince's country is gone, he goes to practice immortality and stops in the Qi-refining period for the rest of his life. He is bullied and protected by his senior sister. His senior sister is gone, he is misunderstood by the world, protected by his brother, his brother is gone, he picks up a little girl, and his daughter is gone. The person he likes is heartless and unaware, and love is unattainable.
After reviving his life, Luo Qingyu vowed to change his destiny against the will of heaven. Only a generation of demon lords would not be miserable.
Concept: In the face of absolute intelligence, force is vulnerable.