C100 Chapter 100 - dare you test

When Su Xia Yue put the four-star spiritual fire into the furnace, the fire inside the furnace immediately burned to ashes. With shocking speed, he refined all the herbs in the furnace into spirit essence.

Dots of different colored fluorescent light rose from the bottom of the pill furnace and circulated around the interior of the furnace.

If he were a Common Tier Pill Refiner