"Luo Cheng, since you didn't place a spiritual mark on Duocai, Duocai's combat ability isn't restricted, and so it is really a good thing.
Furthermore, if someone wants to steal Duocai from you, they would first automatically attempt to remove Duocai's original spiritual mark. You aren't a spiritual master, so if you had placed a spiritual mark, it would have been easily broken by anyone who knew what they were doing.
When a Demon Beast's spiritual mark is erased, the Demon Beast's soul will receive a heavy impact and it will lose consciousness, losing the ability to resist. At that time, it would be easy to subdue." As they travelled, Yang Su told Luo Cheng some ordinary knowledge that pertained to Spiritual Masters.
From that, Yang Su learned that Luo Cheng had used the simplest, crudest method to open his spiritual space. She hadn't been able to hold back imparting some foundational techniques to Luo Cheng.
