Let You Be the Devil, and You Can Turn Xiao Baga into a Saint?

The entire world of cultivation thought that the protagonist's "Supreme Demon Sect" was a cancer in the world, but it turned out that they never killed innocent people indiscriminately, but instead chased "Baga" across the world to kill them. Other demon sects came to learn the scriptures, and saw the protagonist's disciple using the "Soul Searching Technique" to locate the location of "Baga" while reciting the "Pure Heart and Universal Good Mantra" in his mouth.