C53 Body Refining Fifth Level

At the side, Old Mu's figure floated in the air as he watched Ouyang Chen practice his sword art. However, as he watched, the smile on his face gradually disappeared, and he frowned. A faint anger appeared on his face as he muttered, "This rascal has changed his sword art before? "He truly doesn't know his place. Nonsense …"

How could Elder Mu, who had lived for an unknown amount of time