"Eh? Fang Heng, the one in your hand is..."
Seeing that Fang Heng had successfully controlled the magic array, Sandy was suddenly interested and came over to observe.
"Oh ho? It's a spirit catalyst crystal cube?"
Fang Heng looked at Sandy, "You also recognize it?"
"Yes, yes. I saw it when I was reading books on the third floor."
Sandy looked at the crystal in Fang Heng's hand and nodded, "The book says that the Empire has spent a lot of money on its development, but the one in your hand doesn't seem to be a second-generation product anymore. It's probably the latest generation of scientific research products."
"Do you know why the Empire is developing such a thing?"
Fang Heng thought that they probably didn't have anything like the sacred tree to feed, right?
