He extracted the gall from a Sixth Tier Viper and tossed it into his Backpack.

"No Star Crystal."

He was a little disappointed, but a smile returned to his face when he thought about the day's haul. A total of 17 high-grade blue crystals. It was clear that the vipers had a very high Star Crystal drop rate. The higher the tier of a Mutant Beast, the more Star Crystals it produced. That was why high-level warriors were always so wealthy.

In one day, Zhou Zheng had used ten bottles of antidote and killed nearly thirty Sixth Tier Vipers.