Zhang San carefully and seriously finished reading the inheritance on Kong Yuting's leg and only then did he understand what the inheritance of the Pure Stream Sword Sect was all about.
The Runes contained within were not only the combination of Runes and Swordsmanship but also the origin of the Pure Stream Sword Sect's inheritance.
The founding ancestor of the Pure Stream Sword Sect was once a member of Confucianism; he had his own unique understanding of cultivation and held views on Confucian thought that differed from others.
The outcast eventually left Confucianism and established the Pure Stream Sword Sect, making the combination of Runes and Swordsmanship as the core of its inheritance.
Furthermore, for the continuation of the sect, he left behind an extremely radical inheritance method, which was to forcibly combine all the Runes with one's True Core, and then violently break open one's Seas of Wheels.