As a well-known warrior, Lou Cheng's name was enough to shock people. Everyone in the martial arts community would know that he was the Heavenly Son who ranked just below those inhuman masters. He was a fighter of Peng Leyun's level before Peng Leyun had advanced. They stood no chance against him.
Besides, Lou Cheng was not a single fighter, for there was a giant force, the Ice God Sect, supporting him. Hence, Huang Zihua had to rush back to his sect to ask one of the most powerful elders for help.
Maybe Lou Cheng came here alone without notifying his sect, but now he is likely to ask them for help. Though the Ice God Sect's forces haven't permeated to the surrounding areas, they have many masters, and we can't defeat any one of them.