Atlas didn't answer my question! It seemed he was not too sure, either.

"Father only mentioned that the distribution maps were kept separately. My father's map shows geographical locations, while your father's map indicates mineral deposits. They need to be combined to make sense," Atlas explained.

At that time, my father also mentioned the details of these distribution maps, but I only had a vague understanding and didn't fully comprehend them. Now, Atlas explained it to me in detail again.