C1289 Not a coincidence
Nan Feng did not ask what was going on between the Immortal King and Immortal. He reckoned that they were separated into different mountains and would not let anyone move against them that easily.
However, all of this had nothing to do with Nan Feng. He was just a Feathered Immortal, so the Immortal King would probably not even look at him directly. He just wanted to go play around