My Master Has a Dual Personality

One is the evil master who wants to be a rebel every day. One is the cold sect master who is as hard to approach as an iceberg. On the surface, they are a pair of sisters who have never met each other. In fact, they are two personalities in the same body. Qin Yu said that he had no intention of riding on two boats, but what should he do if the boat broke apart on its own?