Lost in his analysis, he mused, wouldn't a more realistic illusion would be himself in the middle of a breakthrough, only to be interrupted by a possession attempt from one of the inactive wills of his Avatars?
As he thought about this, the scene in front of him actually changed accordingly. A version of himself sitting cross-legged, deep in cultivation with his aura surging suddenly appeared a couple of metres away.
According to the plot, 'he' abruptly became corrupted in the blink of an eye. To Di Tian's surprise, 'he' suddenly stood up and brandished a spear towards his neck the next moment, attacking him directly.
Di Tian reflexively waved a hand, and with a thought, spiritual energy was siphoned from the atmosphere around him to form a gigantic cocoon. This was a makeshift reality, so he indeed felt the presence of spiritual energy to do so.