Master alchemist!
It could be said that it was the highest alchemist rank here on Earth, equivalent to a saint in the medical world. These saints would study medicine for their whole lives before they could gradually attain perfection and be at the pinnacle of the medical world. By then, they would be at least fifty years old.
It was the same for alchemists. Even though the Force had entered Earth for thirty years, only around a dozen master alchemists had emerged, but they were not young.
Subsequently, there were no other alchemists that had reached the ranks of a master. Even the prodigies who were well-known throughout the country could only become advanced-stage alchemists. If they wanted to be a master, they would require much more experience.
A master alchemist was still much inferior to the master alchemists in the Xingwu Continent. It was the same for a runemaster. That was the gap between the two worlds!