The Queen Mother of the West needed the Snake Demon sisters to stay behind and help her take charge of the core of the Ruins Realm.
On the other hand, Qi Tongwei looked like the fierce and bellicose Tiger Demon type—strong in combat prowess, yet not particularly fond of using his brains. He would make a most capable subordinate.
As the saying goes, a country in turmoil longs for fine generals. With the chaos in the Ruins Realm dragging on for a century, the Queen Mother desperately needed a powerful subordinate to assist her.
Chapter 409