So I'm at volume 4 of reverend insanity and fang yuan is just roaming the other regions without any restriction. When he first went to northern plains as a mortal using fixed immortal travel Gu he faced suppression and it took quite a while for him to adapt to northern plains. But now that he's become an immortal zombie, he's facing no restriction at all? It was said that crossing a regional border causes backlash to Gu masters and suppression but then it was said by tai bai that fixed immortal travel negates that. If that is so then why did fang yuan face suppression in northern plains but not in western desert when he faced against Mo clan's 'Plump lady' Gu immortal. He dominated that fight and there was no mention of suppression what so ever. Am I missing something here?
Edit: So most of the answers are pointing out that only mortal Gu masters face suppression and not Immortals. But what about mortal Gu? When FY first entered northern plains not just his cultivation but his mortal gu were also suppressed but now I'm at chapter 675 and FY is using a mortal killer move called "Hair Armor" but there is no mention of any suppression on these mortal Gu. Why?