The grudges and emotions between cultivators aren't that complex; it's all about the Magic Couple Materials and Land in the end.
What Sui Yunfei intends to do is also simple: plainly stated, it's about stealing from White Deer Peak and taking goods from the Xuanji Sect. More specifically, it's about borrowing the mount of the Xuanji Monster, utilizing the antlers of the white deer.
But if he does it himself, it's inevitable that the Xuanji Monster will figure it out. This old geezer is indeed quite formidable. It's unavoidable to come under his lethal hand, so he needs to find someone suitable to take the blame.
Tie Dan is the right person for this.
Tie Dan didn't care either; he had already offended White Deer Peak, and didn't like the Xuanji Sect, so he might as well go for it.