Two rows of guards

Xie limo knew that Yun bixue had a lot of questions on her mind. Seeing the burning glint in her eyes, he caressed her head and explained patiently,""Do you still remember the formation we studied in the haunted Hollow?"

Yun bixue nodded. Phantom Valley was a place where the talents of the heavenly Phoenix were born. The successor of Phantom Valley was most proficient in mechanisms and arrays.

"This is the nine-nine derivative formation. Every step has a chant, and it's similar to the one we studied before, so I can figure out where the button is based on the steps."

Yun bixue looked around her and thought for a moment. She said in a low voice,""But I didn't expect ..."

She realized that her brain was like mush down there. On the other hand, Xie limo was extremely calm and clear-headed, and he could infer many things from one fact.