C76 Exploding Thunder Balls and Seven Twists Smoke and Wind Formation

"Senior Brother Tong..."

"Hmm? Junior Brother Hengtian, do you have anything else?"

"About that, Junior Brother, I would like to ask you, Senior Brother Tong, what is the exchange rate between Origin Crystals?" Hengtian said a little awkwardly.

"Senior... Junior brother, this... Cough, cough, between these Origin Crystals