After some consideration, to avoid any mishaps, Lin Yi decided to conduct a test first. After all, this was the creation of his own Golden Core within his Dantian, entirely different from the Pill Furnace used in crafting ordinary pills. If the Fire Pill were to be consumed too quickly, it wouldn't last for two days.
It was impossible for him to craft ordinary pills in the process of making his Golden Core.
Obviously, the safest approach would be to make a copy of Foundation Building Spiritual Liquid outside and refine it with Fire Pill.
The pity is, making the Golden Core is in the specific environment of Dantian, which couldn't be replicated. After some thought, he decided to put the Fire Pill into his Dantian for a test under the protection of the Pill Immortal Master.
The experiment didn't require much time, four hours were enough. He only needed to know the consumption rate of the Fire Pill.