Only a second had passed since the unknown voice was heard by him when Xie Feng had already moved in front of Xie Yao and Gu Qianxue as he looked in the direction from where the voice from before came from. His eyes visible through the mask covering his face were as cold as the ice under his feet and his guard was at the highest level. An existence capable of silently appearing behind him could not be weak in any way!
Although Xie Feng tried to keep composed, it was impossible to convince his own heart. He didn't even know how long he had been watched by this stranger and only when he heard the stranger speak did he know about his existence; this was a great shock to him!
