C169 Mortal Pavilion

Dad, wait a moment." Ling Yan formed a few hand seals and entered the hall. A thin layer of transparent light enveloped the entire hall. With a flash of light, the light disappeared without a trace.

Zhang Yang laughed and said, "What do you mean by that?"

Ling Yan nodded and said, "Right now, the entrance and exit of the Hall of Alchemy is only here