Dressed as a Demon, but Recognized as an Ancestor by the Righteous Sect

Four thousand years ago, Chu Yuan transformed into the Demon Lord of the Xuanhuang Realm. Before he could figure out what was going on, he was suppressed by the Zhongxing Ancestor of the Qingxuan Sect and sent to the back mountain of the sect. Four thousand years later, the Qingxuan Sect was suppressed by all the major sects due to the lack of disciples in the sect. Even the daughter of the head of the sect was reduced to the point of being forced to marry... At the time of crisis, Chu Yuan walked out of the back mountain and accidentally solved the Qingxuan Sect's troubles. He was mistaken by the Qingxuan Sect for a certain ancestor who was in seclusion... … In order to avenge Qingxuanzong's four thousand years of imprisonment, Chu Yuan took advantage of his scheme and became the ancestor of Qingxuanzong, trying to turn Qingxuanzong into the largest demon sect in the world! To this end, he also recruited various apprentices who had the potential to become demons: For example, the eldest disciple who is obviously the legitimate daughter, but is bullied and ridiculed by the family because of his father's doting on concubines and killing his wife. This kind of person is a good candidate for darkening at first glance. With a little guidance, she will become a rare female devil! Another example is the second disciple who was framed by his adopted son and had his immortal bones dug out by his biological mother to give to his adopted son. Such a person is simply born to turn into a demon! Another example is the eighth disciple with the surname Tang. Oh, you don't need to do anything about this. Just by hearing the surname, you can tell that he has a devilish demeanor! Just when Chu Yuan was feeling proud of his arrangement, he found that the development of things seemed to be somewhat beyond his expectation... … "That's not right! What about the black people you promised to turn into demons? How come you all ascended to immortality?"