Journey to the West: from a Piece of Grass to a Tall Tree

When others travel through time, they are still animals at worst, but I am better off, transmigrating directly into a grass growing on the edge of the cliff. "I directly reorganized my DNA under this setting." Bind to the "Photosynthesis" system, you can upgrade infinitely as long as you bask in the sun. The wind blows and the rain blows, and the birds, beasts and insects peck at me, but I endure it! Immortals fight with each other, mountains collapse and the earth breaks apart, I'm still here! My roots quietly spread across the entire continent, absorbing the spiritual energy of the earth's veins. My branches and leaves secretly extend into the nine heavens, eavesdropping on the secret words of the gods. I thought I would continue like this until the end of time. Until one day, a monkey breaks into the heaven! "Huh? It turns out this is the world of Journey to the West!"