Sword Mountain

It was a very advanced Sword Principle. Since Jian Wushuang only had superficial knowledge, he was unable to comprehend most of it.

"Very profound."

Jian Wushuang shook his head and looked at some of the other Dao characters, but they were also too profound for him to understand.

Finally, Xuan Yi began to explain.

"Sword Principle is quite broad and profound and you've just recently condensed your Sword Heart, which is only the starting line for truly cultivating Sword Principle."

"Sword Principle is very complicated. Because of that, it is divided into 72 concepts which are like 72 rivers joining to form a sea. If you only understand one concept, you can only comprehend a tiny part of Sword Principle. So, if you want to truly comprehend Sword Principle, you have to completely understand all 72 concepts."

"For now, you still have a long journey ahead of you," Xuan Yi said and smiled.