Ok so basically they're currently at the sinner's pit. The girl that is hanging at the pole was probably hang there by the soldiers before as a way to humiliate that sinner.
That general shouted 'brother!' bcoz he's calling the souls of the deceased sinners.
Not really sinners..those were his fellow soldiers
It was described like that in the novel so... ╮(￣▽￣)╭
They are being led up a large spiral staircase to a staging area by Ke Mo, a ghost who was once the general of the Banyue nation army in Crescent Moon Oasis Valley. Trash-God Crown Prince Xie Lian has just noticed an array that is used to stop the dead spirits of those who have been thrown into the Sinner's Pit from jumping back out again. He also notices the figure of a dead woman hanging from a gibbet.
Here's the novel link, its explained really well. I hope you understand it after reading
https://www.novelupdates.com/series/heaven-officials-blessing/
uhm can I ask what just happened coz im confused