Why is Liu a better person?

In fact, Liu is a descendant of Sanqing divination, which was taught to her by Uncle Liu and when she was a child. But she always pretended not to understand divination. As for Bai impermanence, Xie Bianan instructed Cui and Yi to go to college. In fact, she is looking for Liu, a person who can help Cui find the lost female soul. However, they found Shi Gui by mistake, and Shi Gui was the one who killed him. In the end, Cui initially felt invincible. However, through Liu's statement and some of Uncle Liu's previous statements, he realized that it was impossible to really understand Sanqing in such a short time. Even his divination is not as good as Liu Xi's (for example, he can't play dumb), because some experiences need time to settle. Not to mention that he underestimated the difficulty of spells and magic. He used the magical power of psychic spells to inform Lao Yiyong to escape from the detention center and prepare to clean up Shi Gui. In addition, Liu also helped Cui find out the position of setting up the seven treasures and white jade wheel to change his destiny, so that Cui informed Black Mother and Grandpa Hu in time and foiled the plot. Without Liu, Cui might not be able to cheer up and Shi Gui could not solve it, so Liu Ye was the last person to solve the problem.