Ji Yao was in such a terrible emotional state that he was merciless. Thinking this beast had attacked Red Bane and possibly left a hole in her, Ji Yao was pretty much pissed. He grabbed Xunshi Zhe's battle axe and did the unthinkable.
The beast was roaring and snarling as it should but Ji Yao was unfazed. He carried that heavy axe and finished it off. He tried to lift the battle axe out off the creature but it wouldn't budge. It must have been lodged in the wound.
He gave up and told the owner of the weapon to summon it. He was in desperate need of a shower. As though he had read his mind, Old Du showed up in a rowboat coming to the rescue. He was into poisons not fighting so he didn't jump in with them.
He might have had a poison potent enough to kill this big boy but everything happened so fast. By the time he ran over with a harpoon laced with poison at its tip, a huge tsunami rolled up out of nowhere rocking everything.
