It's said that on Mount Shu, Enlightenment Dao revealed his understanding of the true essence of the Sword Dao by inscribing a huge Xia Dynasty Dragon Seal on the cliff face.
Aside from some scholarly immortals or great mystics, the rest were unfamiliar with the Xia Dynasty Dragon Seal, but those present felt its sharpness and the spirit and idea it conveyed, and they knew without being told that this character was indeed the character for "sword"!
Enlightenment Dao then sheathed the Seven Stars Sword and bowed, saying, "This poor Daoist has made his humble attempt."
Although Enlightenment Dao's understanding of the true essence of Sword Dao was not as profound as that of the Patriarch Song Lun, the character he wrote conveyed the essence more vividly and aptly than ordinary characters. It was woven with complexities surpassing even the Oracle Bone Script of Song Lun. Each stroke demonstrated a firmness and sharpness as if forged by divine swords.