Why did Mi Xuan forbid Wu Hong Qing from interfering with the Solitary Destructive Heaven's affairs? Why did he lie to Wu Hong Qing about making a pact with Feng Qing Yang?
Mi Xuan was worried Wu Hong Qing would learn the truth after visiting the Solitary Destructive Heaven. At that time, Wu Hong Qing would definitely like a coward after finding out how strong Duan Ling Tian had become.
Mi Xuan and Wu Hong Qing's relationship was a mutually beneficial one. There was no friendship between them at all.