The various enemies down there got distracted and disorganised by his initial grenade and arrow attacks. But the moment he landed down there, and they started to drop any concern for these explosions, they were arranging themselves and running towards him from all directions.
It felt like a tsunami was heading towards him. Even if he was strong, even with everything he had, there was no chance for him to survive this.
"What are you waiting for? Move now before it's too late!!" Sloth and others could tell how terrible Wiliam's situation was, and still Fang never made a move. No one knew why he stood at the opening, watching everything without showing any intention of helping William.
"I know you are watching, so keep watching him and see how he'll kill everything here," Fang suddenly muttered, in a low tone that couldn't be heard well if anyone was by his side right now. But for those watching him using their spirit senses, they heard his words perfectly fine.