There are only two situations in which one cannot enter the Heritage Barrier. The first is not having enough map pieces. Lin Xue absolutely meets this criterion.
The second situation is like Mu You, who already held a position or title in another Sky City, which prevented him from taking up a post in any other Sky City.
However, precisely because of this rule, before entering the city this morning, Mu You had Lin Xue and Little Ya resign from their positions of Deputy City Lord of Dawn City. Now, Lin Xue was in a completely free status. Meeting both conditions and still not being able to enter was particularly outrageous.
"Roar!"
The werewolves around were still frenziedly launching attacks at Mu You.