Chou, Keihou

張桂芳

Chou Keihou is a doushi soldier who guards the Seiryuukan checkpoint fortress. Alongside Fu Lin, he was dispatched by Bunchuu to delay Kou Hiko's escape. In the anime, their mission also included retrieving the two princes, Yinxiao and Yinhong.
He wields the paopei Koujyu, which resembles a megaphone. It restricts movement by using sound to affect the nervous system. However, for it to function, he must shout the name of his target.