"Everyone knows I have a Divine Stone. This stone hails from the Maternal Mountain, able to discern good from evil among those who enter. Over the years, anyone entering the Maternal Mountain must undergo this test. All who have been tested praise my stone as extraordinary, except for you, who see it as worthless."
Just from this, it seems the cunning old thing wouldn't present such a magnanimous front before Tang Rao for no reason. There must be more behind it.
"It's not originally valuable. It's just that those under your charge are ignorant. In my view, there are many stones better than yours. Other stones never break, unlike yours..."
As he spoke, Tang Rao couldn't continue. He didn't want to make it too obvious.
"Oh? You don't regard the Divine Stone, do you have a better stone than mine? Why not bring it out for me to see?"
