What is Zhou Yixian's status among immortals? Where did Baguio go? Why didn't Mr. Ghost let Xiao Huan save Baguio?

Old man Zhou and the founder of Qingyun Gate are old friends. He learned the skills of running for his life, fortune telling and using symbols from Qingyun Zi. As for Baguio, you can't ask this question without reading the novel. Baguio resisted the sword to save Fan Xiao, but she lost her soul. Who said Mr. Ghost wouldn't let Xiaohuan save Baguio? At that time, Xiao Huan had not been accepted as an apprentice by Mr. Ghost, and he didn't understand Xiao Huan's potential. Later, he was asked to learn ghost witchcraft first, hoping to successfully rescue Baguio with the help of Xiao Huan Superman. But I didn't say it, and then Mr. Ghost died, so no one knew.