My Disciples Are All Villains

"Tu'er, remember when you go down the mountain to do the chivalrous justice and walk the way for the sky, don't fall into the face of a teacher." "Yes, Master!" Many years later... The disciple turned out to be Demon Sovereign...Disciple #2 went past the same route... Disciple #3 too... P.S: The chapters are divided into two in raw source. The single chapters are first part while double ones are second part