He is now deep in enemy territory, surrounded by demon clan powerhouses who could extinguish him with a wave of their hand. He cannot afford a single misstep; the situation is too dangerous.
Placing everything on Chai Asi is really unreliable. Greedy, gluttonous, foolish, slippery, lustful, cowardly—this kid has it all. Teaching him is not a one-day effort.
Establishing his own sect and spreading it in the demon clan's domain is undoubtedly a feasible path.
The demon clan already flourishes in divine ways, with numerous miscellaneous deities. He secretly preaching will not attract much attention. If he succeeds, he can use the divine way as a possibility for error tolerance, increasing his chances of survival in the demon clan territory.
