Several more hours passed. The alchemy furnace was full of ruined medicinal liquid; not a single spiritual herb had been successfully refined. Yet Chen Xun remained unhurried and unruffled, settling into meditation to analyze the process.
"These spiritual herbs of Tiandi truly are extraordinary. A difference in age, and the gap is already this vast."
Chen Xun mused inwardly. The same Foundation Establishment auxiliary herb, differing by merely ten years in age, already required an entirely different degree of heat and method.
This was completely unlike when he had refined Heavy Feather Pills and Qi-Boosting Pills back then. Control over the heat had to be precise down to the year. No wonder Qi Refining Realm cultivators could not refine them.
These spiritual herbs probably required the legendary Divine Sense for complete control, greatly increasing the pill formation rate.
"But spiritual herbs and time are what I lack least." Chen Xun revealed a faint smile. He found it immensely interesting, without the slightest discouragement from failure.
Time passed amid Chen Xun's daily pill refinement. At first, he refined no more than five herbs a month. Whenever he failed, he recorded his experience and sensations, then meditated to retrace the feeling from that moment.
Spring passed into autumn, and another year hurried by. The Medicine Valley remained warm through all four seasons, and time seemed to have left no traces on Chen Xun or Black Bull.
Within the secret base, Black Bull stared bright-eyed at Chen Xun's alchemy furnace. A medicinal fragrance drifted over as he kept sniffing with his bovine nose.
"Moo~~!!" Black Bull suddenly became excited. Chen Xun had truly worked too hard this past year, yet he had been unable to help at all, only cultivating spiritual herbs at the side.
At last, a spiritual herb was successfully