You Didn't Even Finish Elementary School, and You Want Me to Cultivate Immortality with Math?

[Urban + fantasy + mathematical cultivation + brainless wish fulfillment + wild nonsense + pure country bumpkin] Beyond the three-dimensional world lies a four-dimensional world. Humanity discovered that the three-dimensional world it inhabited was a vast, self-consistent mathematical universe. Pi is one of the most fundamental components of the mathematical universe's engine, as well as the first line of its cosmic source code. The beings of the three-dimensional world are nothing more than “viruses” kept by the four-dimensional dimension shepherds, who use them to harvest Yang Gods. But how could humanity ever willingly let higher-dimensional beings harvest them at will? When the universe was formatted and the world restarted, the three books of Heaven, Earth, and Humanity evolved, giving birth to a country bumpkin. Thus began the journey to fight the dimension shepherds... The protagonist, Chen Hei, is a pure country bumpkin who never even finished elementary school, yet has to cultivate immortality using mathematics. From beginning to end, his power only reaches the Bright Force stage. He may only be at the Bright Force stage, but you'd better not mess with him, because whoever does will get taken down...