The 'Ten' in the Ten Daos wasn't just numerical; it figuratively referred to the countless Daos in the world.
Zhu Yi's Slayer of the Ten Daos didn't just refer to 10 different mantras. Besides the Heavenly Classic of the Way's Virtues, it included all the mantras that he had comprehended.
Zhu Yi's powers and methods had always been the most resourceful among Lin Feng's disciples. But there's one thing he lacked – offensive methods.
As compared to the others, Zhu Yi's powers didn't lack lethality. It's just that he wasn't offensive enough.
Lin Feng gave him the Dragon Slaying Sabre then, which was purely an offensive weapon.
