C449 Secret Upgrade

The old man could tell Shi Ziyi was in a difficult situation, so he taught him how to control the fire. In the beginning, Shi Ziyi still couldn't control the fire well. But slowly, Shi Ziyi was able to control the fire well. Once Shi Ziyi could control the fire, he could use the alchemy furnace to refine Shi Ziyis without any problems. The only problem was. .