Though they spoke of it, He Xiaoyao did not actually go straight to kill the emperor of Xuanbei Kingdom, for he knew deeply that killing one would only bring a second, and they could never be killed entirely.
Killing him was useless; he needed to break their spirit so as to serve as a lasting deterrent.
The reason he had spared Qu Wenzi and tied him up was to keep him for later use.
Chapter 349