Of course, the reason Yang Xiao didn't tell Elder Xiao that the Zhou Family also had a Tomb Burial Map was not because he was worried Elder Xiao would take the map back once he heard the news.
Elder Xiao was able to restrain his greed and not explore the other locations on the Tomb Burial Map, so he wouldn't care about other maps.
He concealed the news because he didn't want Elder Xiao to worry.
The matter of Xiao Yibo was already enough of a headache for Elder Xiao.
So some troubles, it was better to keep to himself.
"I've thought about the issue you mentioned and even used the Xiao Family's resources to investigate, but unfortunately, I found nothing! I haven't received any news that others possess a Tomb Burial Map either, and I suspect that even if they do, they must be keeping it very secret. Moreover, I suspect this Tomb Burial Map might indeed be one of a kind," Elder Xiao answered Yang Xiao's question.