Borrowing the hand of the Heavenly Demon, at least he could do more, kill more people from the opposing faction. If he could remove the royal family, then he would have complete control over the Jue'er Tribe, clearing all chaotic voices. For the next few hundred years, at least while he was alive, the Jue'er Tribe could rest and recuperate in peace.
But we, for the so-called 'justice', let the 'innocent royal family' go, making his efforts go to waste for no reason.
In General Jue'er's eyes, this was yet another interference from the sects. It seemed like the intention of the sects was to never let a Wang Bu with Divine Repository heritage develop smoothly. A 'tail' must be left behind, making the rulers of Jue'er Tribe chase their own tails and unable to govern properly.
