C443 Seizing the Stronghold and Discovering the Method Yu Er Returned to the Palace

"Well, it's not that easy. Sister is using me, Royal Father, to threaten me. Sigh! Elder sister is becoming more and more cunning, but elder sister, as far as I know, this stronghold isn't considered a big stronghold. But it is not a small sect. How did you do it?"

"What did you do? How did you subdue the stronghold and make them submit to me?"

"That's right. Moreover