Deca Kendo Strike originated from the Huaxia Alliance ancient warrior system. It was a battle skill that would allow one to achieve S-tier.
Even lower tier ancient warriors were able to practice Deca Kendo Strike. After all, the skill advancement was uncapped, releasing a sword was also one of the styles from Deca Kendo Strike, similar to releasing a hundred swords, or a thousand swords.
However, in order to achieve S-tier battle skill for Deca Kendo Strike, it would require at least ten thousand swords.
The battle skill was already long published within the Huaxia Alliance, and it was recorded that there were six people among the S-tiers that had mastered the skill. Long Ting was one of them, he was the duke of Dragon Capital, and figurehead of the entire Huaxia Alliance.
However, He Tianxing, who had mastered duelling swords, had also mastered the same skill!