Grand_Void_Daoist
But the danger of teleporting between realms (like Celestial and Immortal realm or Immortal and Mortal realm) should be greater than teleporting inside one realm (Celestial or Immortal), right? Teleporting between realms requires to go through Grand void while teleporting inside realm - only through Greater void. And teleportation between realms require more energy based on Lin Mu's skill that he can teleport to the other end of Immortal realm, but cann't yet to his Xiaofan World in the Mortal realm.