C46 Cryptology

In this, is there anything else I don't know?

Moreover, it's worth mentioning that Old Xie Huang seems to have been with my father the entire time. In that case, how did Old Xie kill my grandmother?

So at this moment, I wondered if there was a problem with my father's words.

I quickly recalled that previously, when I first met my mother's ghost, Tang Ran and my mother's soul fought