This Dutian Sword Seal, slightly modified, wouldn't it become a masterful Sword Technique?
At that time, Sword Path was just budding and had not formed a system, and there was no trace of the sword cultivators' lineage. At this moment, if Jiang Chen created this Sword Technique and passed it on, he could perfectly bear the title of "Ancestor of Sword Cultivators".
He needn't worry about stealing others' opportunities. The title of "Ancestor of Sword Cultivators" was most appropriate falling on Jiang Chen because his master was called the Pangu of the Upper Qing Dao.
Among the Sanqing, only the Upper Qing Saints used swords as enlightenment tools.
Carrying the Tao on a sword, it was indeed appropriate for the lineage of the Sword Cultivators to fall under the name of the Upper Qing lineage. If outsiders obtain it, it would be stealing the Upper Qing lineage's opportunity.