He's a bald monk.
The three great reverends of this generation, Buyu, who doesn't like to speak, is one of them. He is slow-witted and dull in terms of talent, yet possessing extremely high combat prowess and absolute patience, able to spend countless years to cultivate all his buddhic arts to the extreme. Hence, the foundation of his cultivation base, is most stable.
Buyu had an incomparable defense and he was capable of instantaneous attacks. He was truly suitable for controlling the movements of his opponent.
Buyu = not to speak