Fire Ancestor was a progenitor lacking records including their active aura - a particularly cryptic one. [1]

Strangely enough, despite lacking concrete details and evidence, he was listed among the Decemvirate. Some even said that he was comparable to Gao Yang. 

All in all, no one could actually say why he was so highly regarded. One theory stated that it was just because of the rumor that his master was Emperor Sui.

Many didn’t accept this argument because the existence of the three emperors itself was up for debate. Moreover, some shared the same skepticism about the timeline just like Jinning did earlier. How could Fire Ancestor be Emperor Sui’s disciple when they were so separated in history?

Therefore, another explanation became popular - Fire Ancestor wasn’t a disciple of the emperor but he just found a scripture left behind...