His grandfather had been acquainted with the Ghost General. When there was unrest in the Underworld, the Ghost General was in command of the legitimate armies, busily leading Yin Soldiers and Ghost Generals to suppress the revolt of resentful spirits in the Underworld. As for Yun Tiansheng's grandfather, he was of the bandit leader sort.
He liked to lead a group of Smoke Spirits, wielding Italian cannons to bombard the aggrieved spirits, creating a truly spectacular scene.
The Ghost General and his grandfather became acquainted during those times, both fond of warfare and hitting it off from the start.
Because their philosophies in battle were so similar, they even organized several large-scale joint suppressions.
Yun Tiansheng spoke passionately about it, and I supplemented the imagery in my mind.