C2451 Why is that?

Why is that?

"Cough cough, about that, I myself has recently been comprehending an extremely powerful martial skill and is about to comprehend it. At this time, one cannot move recklessly."

In the Great Firmament Chapter, a Ming Faction's Great Elder was sitting cross-legged on the ground. After hearing the sect head, Xia Mingyue's, words, his old face turned slightly red