In Xuanyuan Nation, Heaven Forged Mountain and Valley of the Medicine God were recognized by the world as the two holy lands of the time, precisely because their existence differed greatly from that of the various branch sects.
Whether it was Heaven Forged Mountain or Valley of the Medicine God, both had a round tower established within. These towers represented power and prestige. The artifact smiths of Heaven Forged Mountain were divided into nine levels, and similarly, so were the physicians of Valley of the Medicine God.
Take, for example, the Divine Doctor Sect's tower that Ye Feng belonged to. Starting from the second floor, each level corresponded to a physician of a particular rank. Physicians wishing to ascend higher had to pass multiple assessments administered by the higher-level physicians before they could be considered successful in advancing.
