Master of Power Beyond Reason

Flynn Lander arrives in a world where everyone cultivates, and the Clearstream Sect turns down his application. He then finds he can build a sect of his own through a system, and he founds the Arcana Sect on empty ground. Training there is free and every disciple draws a monthly allowance of spirit stones, which brings in people other sects would have fought over, among them a girl with a heavenly spirit root and a boy with a chaos body. The grounds fill out with a floating island and a hall for immortal arts. Clearstream and another sect start pushing on him, and a Demon-Slaying Edict goes out with the Arcana Sect named in it. Inside his own territory Flynn cannot be beaten and his strength runs about ten times what it does outside, and he puts down the fighters they send in one after another. From that he comes away with the Everlife Codex, while Clearstream is still gathering an army in the thousands.