Still, having endured for thousands of years already, experiencing even the rise and fall of some powerful forces within the Eastern Continent, and better yet, having encountered sharp-tongued people, not really on the same level, yet comparable to the young man in front of him, the Imperial Court's Ancestor still manages to maintain relative calm, this alone proving just how developed his mental fortitude is.
However, just as how important it is for cultivators of higher levels to not make a single mistake in fights they are in, it is also just as important, if not even more, to not have a slip in emotion that could lead to far more disastrous consequences, and one such consequence presents itself when the old, ancient man just barely manages to contain his own rage.