Eye of truth

At present, when the Metals professor added up Qiao Gun's previous behaviour and speech, he could basically confirm that Qiao Gun had traitorous intentions from the start. His only concern was Qiao Gun's death. Primarily, Qiao Gun started planning his betrayal for a long time. If he was willing to lay hands on Gale, that meant the mountain troll should already be reaching fatality. Qiao Gun should have confidence of finishing it off himself.

Alright, everyone makes mistakes. Perhaps Qiao Gun panicked and made the wrong judgement, in his disaster did he realize that he was unable to finish off the troll alone. But after releasing vampire Edward, Qiao Gun still died. This was extremely bizarre.