It's certain that in the Demon-slaying Bureau, Yuan Tiangang calls the shots, and Yuan Tiangang's wife happens to be Chen Weiran's wife and sister. With an increasingly dislike for Yuchi, they definitely chose to stay put, mimicking the two of them by starting to drink tea, the implication is very clear.
The Defense Department is extremely conflicted.
Honestly, the Director of the Defense Department knows why he has climbed up, it's because Xun Yu was taken out secretly before he could rise!
Therefore, he surely remembers vividly about this matter. The instigator for having Xun Yu killed was Yuchi, so Yuchi himself must be quite a formidable existence. Choosing Yuchi seems to have no issue!
But...
