Wang Ming told his women about everything except from the trials he has gone through and about the artifact talking to him. They couldn't believe what he said, but that's the only thing that could explain how his wounds had recovered so fast. At the start Wang Ming didn't want to tell them about artifacts, as he didn't know if it would do them any good to know. But when he found out that Lang Lin had heard about it, he told them about that too.
When he asked her about it she didn't want to answer him, the only thing she said to him was. "It's related to my mother." Her face looked so sad it seemed like his question had made her think about terrible memories. He didn't know what had happened to her mother. But clearly it's a sad experience. He hoped she would open up, eventually.