Li Gufeng's death is a good testament. If Li Gufeng were still alive now, the three of them together could still put up a fight against Wang Xiaoqiang. But now, Li Gufeng is dead. Any rash action would likely lead them to the same fate as him.
Mo Wentian and Elder Moo, despite having lived over a century, did not want to die, as they were only half-step from achieving Divinity Transformation. Once they achieved Divinity Transformation, their lifespan would double, allowing them to live up to two hundred years and, with further effort, break through to the Return to Void and extend their life to five hundred years.
Who, while able to live, would wish to die?
"Little Friend Wang, to come in and kill without understanding the situation is a bit too ruthless…" Mo Wentian, although standing still, was quite indignant about Wang Xiaoqiang killing Li Gufeng.