The deal
Krune was taken aback. That was Heavin's Soul Cultivation Technique! Krune already understood that even in the Godly Path Realm, no one knew about Mental Energy. That shows just how rare such a cultivation technique is.
"This..."
The God Crystal was precious. With so much of it, he might be able to sell some later to buy the rest of the materials to fix Zule's Spatial Treasure Form. If he does that, it will be much simpler to get Zule to open a passage back to the Mortal Realm for him. One must remember how much Krune wants to go back to his family.
However, the Mental Energy secret was no joke. At least, Krune considers it almost as precious as the Myriad Energies Technique.
Iem noticed Krune hesitation. However, it wasn't like he refused straight away.