I Preach in a Fantasy World and Have 30 Million Disciples

Cheng Yi traveled to a fantasy world, but got a system that required him to teach Taoism. Facing a fantasy world that already had a mature practice system, I'm afraid no one would come to learn from the conventional sect... So what should I do? Cheng Yi had a flash of inspiration—I've been preaching live! When the practice of Taoism sweeps across the fantasy world, the inherent system begins to be broken, and the fluttering wings of a butterfly will surely set off a storm that sweeps the entire world!