Qin Yun and company carefully investigated in front of the Illusion Fiend Mountain Valley.
"What a powerful array formation." Kong Xuan frowned as he looked at it.
"I've made many attempts. There's no way for me to crack it," said Palatial Lord Myriad Flower. "The person who set up the array had attainments comparable to mine; however, the core of this array formation involves the mysteries of space-time. My insights into the Great Dao of Space-time are insufficient, so I'm unable to crack it."
Kong Xuan nodded as well. "It is a space-time array formation. I'm not good enough for this either."
Kong Xuan was best at the Five Elements.