Fantasy: Traveling Through the Heavens with a Sword

I have seen prosperous dynasties that last forever, and I have also seen countries that fell apart in a snap. I have seen the boundless figures in the heavens, and I have also seen the humble begging figures in the world. I have seen beautiful figures that confused countless pairs of eyes, and I have also seen silhouettes that frightened countless pairs of eyes. A young man, armed with a three-foot green blade, used the heavens and worlds as a springboard to reach the peak that no one has ever been to. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.