The pinnacle of martial arts lies not in imperial power or wealth, but in the three-foot green edge and the heart of a sword.
Some people hold swords to guard a city, some people use swords to protect the common people, some people abandon their swords to seek immortality, and some people hold swords to ask about the way of heaven.
Swords are divided into nine grades, people are divided into nine streams, and hearts are divided into three realms.