The Art of Earth Puppetry not only allows one to refine puppets but also includes a comprehensive cultivation technique, detailing every step from Foundation Establishment to Core Formation.

Xu Hei felt a bit unwilling. He knew that his possession of purple True Qi was entirely due to that mysterious cultivation technique, and he didn't want to switch to another.

"Senior, can you give me a response?"

Xu Hei continued to try to make contact, but there was still no response.