This is an Emperor's Aura sufficient to allow transcendence.
When it breaks free from its shackles, rampaging aimlessly towards the Four Continents, it resembles a transcendent mighty being, fallen upon the Divine Land, using its remnants to protect the masses.
Even another transcendent giant is powerless to gather it back.
Shen Yi doesn't engage in those meticulous tasks, like tiling, using this Emperor's Aura to isolate the entire Heavenly Dao with precision. The two sects would never leave him such ample time.
He can only rudely overturn this bucket of glue, letting them return to where they came from.
Living transcendents might get assimilated by the two sects over the long stalemate; the Human Emperor fears this, and Shen Yi is equally apprehensive, especially after witnessing the actions of several Great Freedom Bodhisattvas that day when he stepped into the Imperial City, making him clearly realize this point.
