Ancient Race members possessed Original Methods, while average Human Clan Star Venerables didn't possess the Four Qis' offensive techniques like Jiang Chen. This wasn't a strange matter because they were people who had reached the Ninth Constellation Palace but still hadn't learned a Doctrine Method suitable for their Four Qi. However, just the Constellation Palace alone provided them with enough power and let them possess outstanding strength.
However, Star Venerables who possessed a Doctrine Method could instantly kill them as long as they were still at the same Realm Level. Since it was only a few people who had a Doctrine Method, they wouldn't easily pass it to others.
It was only the Four Qis' cultivation methods that had spread.