Tang Shaoyang did not move from where he was, leaning against the tree as he thought about how to face his enemy. He was trying to figure out what killed his spirits. If he managed to figure it out, he would fight the people who could actually kill the spirits, and his spirits would fight the others.
He and his spirits discussed it, and they agreed it might be an artifact. There might be an artifact that could kill a spirit. Especially for how long The Nirvana Alliance had been doing this. They must have developed something against the Spirit Contractor, and spirit-killing artifacts might be it.
"Even if we know how they kill the spirit, we can't tell who holds those artifacts. We can't be sure if they just have one or every one of them is holding one similar artifact."
[You have me, Master!] Kaiser spoke in his mind.
Hearing his first skeleton's voice, he still had the Skelly Family and his skeleton army.