The Planet Collides with the Earth, the Mermaid's Love Is Unfinished, and the Rich Are Back

I have accumulated my skills for many years and created a leap six science fiction masterpiece. A planet collides with the earth, and the people on earth fight against the sky and the earth. The supreme good is like water. Water is the energy source of living things. There are no aliens. The rich people return to the earth from Mars. Mermaid falls in love and returns to the primitive world.