Wu Yu had used the Skeletal Flame Dragon to help several people previously. This guy had probably seen everything clearly while hiding in the dark. 

Truth be told, the technique and dao arts involved in creating a 10th tier Primordial Spirit Transformation Realm puppet were extremely valuable, and owning one way above hiring a martial cultivator of the same cultivation level as an assistant. 

The Ghostly Artificer wanted the Skeletal Flame Dragon. For him, the most important reason wasn't because the Skeletal Flame Dragon could possibly help him eliminate some opponents. Instead, he was more interested in the spirit designs of the Skeletal Flame Dragon. 

He wanted to master a puppet spirit design like this. If he could do so and had sufficient materials, he could create a Skeletal Flame Dragon army. 

He had used the life of the Full Moon of Nanshan to threaten Wu Yu. He knew Wu Yu would definitely give in, even though the Skeletal Flame Dragon had great importance to him. 

"The Skeletal Flame Dragon belongs to the Floating Dreams Pagoda and is, in fact, part of the Floating Dreams Pagoda. Once it breaks free from the...