His Void Qi…
Haha. In truth, Di Tou didn't even need to guess what had happened, as the architect of it all, how could he not tell what was happening? But confounded by the somewhat confusing feeling of his Qi being lead by it's own instinct, and the somewhat hazy state caused by exhausting too much Qi at once, he had been able to pretend like he didn't know and selectively ignore the situation.
