By then, even if the pills refined from these two Sky Herbs are not enough to fully repair his foundation, he could produce some more; he could even refine Heaven Pills himself.
Zhou Yun Feng is still under one hundred and eighty years old, with more than seventy years left before his lifespan runs out. So much time would be enough for him to break through two more ranks.
After a high-rank Alchemist comes the Spirit Level, able to refine pills used by the Nascent Soul True Monarchs. Afterwards come Earth Rank, and Heaven Rank.
In the entire Heng Yuan World, Alchemists capable of reaching Spirit Level can be counted on one's fingers, most of them being Nascent Soul True Monarchs who love Alchemy. It is almost unheard of for a cultivator to achieve Spirit Level Alchemist status at the Golden Core stage.
Even Medicine God Valley, which mainly focuses on Alchemy, does not have such Alchemy prodigies.
