Xu Yang unified the Northern Domain, integrated resources, and fully developed to deal with their threats.
The True Immortal Upper Realm needs no further mentioning; Xu Yang has already offended many there, not to mention the kind of enmity like the annihilation by the Ninth Heaven Sword Pavilion. His performance and development over the years have also led people to believe that he possesses earth-shattering treasures and supreme opportunities.
The major Immortal Gates and the two clans of demons are likely to have informed the Tao Lineage of the Upper Realm. As soon as he ascends, they will make their move to capture this fat sheep.
That's how it is in the Upper Realm, and things are no better in the Divine Land. There hovers the "Dark Chaos," a catastrophe like a sharp sword suspended above, which could fall at any moment.
Although the range of this Dark Chaos is confined to the Central Region Divine Land, who can guarantee it will not spread to the Five Domains?