If he had run away, even if he could have succeeded, he would have had to live his life on the run, hiding from place to place as a wanted criminal.
Moreover, although the Liu Family matter was resolved, it didn't necessarily mean everyone would lose their lives.
Sikong Mo could guess the result of the Liu Family based on the news he received; how could he not have anticipated it at all!
As for wanting Ye Jiu to seek leniency, it was merely Liu Yunqing's attempt to add an extra layer of protection for the lives of the Liu Family members.
Regrettably, that girl was indeed ruthless enough, truly worthy of being a descendant of the Imperial Family. Even if she had grown up in a small mountain village, she could remain indifferent to the lives of hundreds of people.
Liu Yunqing couldn't help but give a bitter smile; it was now impossible to scheme against her.
However, the one silver lining was that he had never done anything to offend her.