The Sword Soul Seal was something Zhang Yang's main body had created from scratch, building upon the nine great heavenly meridians of sword cultivators.
That was right—created from scratch, unprecedented and never to be repeated.
Zhang Yang had originally found it rather strange, because he did not think himself that much of a genius. It was only after he encountered this Nine-Armed Demonic God and unlocked the fragment of memory his main body had left for him that he understood.
It was not that his main body had been clever enough to create it out of thin air. Rather, during a battle, he had encountered a specific situation. After a Demonic God army had annihilated one of their sword cultivator armies, his main body had learned from the pain and created it based on the characteristics of those Demonic Gods and the forces behind them.
Moreover, his main body had only created the Sword Soul Seal, founded on the Soul Meridian Sword Core. The remaining two Sword Seals had been created separately: one by Zhao Baiyi and Tao Yao, two Nascent Soul Stage direct core disciples, and the other by Jiang Rong, Li Guokui, and the rest.
It could be said that these three Sword Seals had combined the wisdom of everyone in the Heavenly Sword Clan.
Unfortunately, the time left to them had been too short. The enemy had come in overwhelming force, one direct core disciple after another had died in battle, and in the end, even his main body had been forced to merge with the Azure Nether Sword.
Thus, in the end, there had been only three types of Sword Seals capable of utterly restraining Demonic God armies.
The first was the Sword Soul Seal of dispelling falsehood. It was extraordinarily effective against targets such as