Yang Jing took a deep breath, then slowly exhaled.
Innate Pure Yang Qi was different from the various True Fires and Spiritual Qi he had refined before. A Great Celestial Demon at the Golden Core Realm had been severely injured just by a flash of its light.
Although this was partly due to an elemental weakness, it was a clear testament to the power of the Innate Pure Yang Qi.
If he was the least bit careless during the refining process, it wouldn't be him refining the Innate Pure Yang Qi; the Innate Pure Yang Qi would refine his Gang Qi and Magical Power instead.
If that happened, at best, his cultivation would regress. At worst, his physical body would be damaged.
So, Yang Jing was extremely cautious. After opening the Iron Embryo Treasure Bottle, he only carefully drew out a single wisp.
