That night, a faint red glow lit the horizon, reflected on the broad street outside.
Jiang Yan slapped the Pill Furnace, and several fist-sized Thunderclap pills immediately leaped out.
Beside him, Yanbao hurriedly ducked away at the sight of the pills.
These pills were terribly dangerous. Even though Jiang Yan had used the Stone Book to analyze the Pill Formula, mistakes and omissions were still inevitable during refinement.
With ordinary pills, he could simply open the furnace and take them out, and even give them to Jinbao and Yanbao as snacks.
But these Thunderclap pills were different. Early in the refinement, things were still all right, but once the pills took shape, even the slightest error would make them explode at once!
That night, Jiang Yan had made one mistake himself, adding slightly too little spiritual material before the pills came out of the furnace.
The blast had sent Yanbao flying. Had the building not been protected by formations, Yanbao might have smashed straight through the wall and flown outside.
It had blasted Yanbao belly-up, leaving Yanbao sprawled on the floor for quite a while before recovering.
And that had only been a failed pill. Had it been a finished product, there really would have been blood.
Seeing Yanbao like this, Jiang Yan shook his head in amusement.
"Don't worry. I've already burned away the ones with unstable medicinal properties inside the furnace. They won't explode."
As he spoke, he placed the pills in a jade bottle and set it beside him.
There were already three such jade bottles laid out, each holding ten Thunderclap pills.
He had also taken one downstairs to the stone chamber to test its power.
By Jiang Yan's estimate, a bottle of ten pills should barely match a single Divine Thunder.
But if he stocked