Young Man's Song: Sword Asks the World

[If you don't dismantle the CP, it means you can resolve the difficulties] ps: I won't follow the protagonist, it's purely an original plot, so don't join if you don't like it. There are people outside people, there are mountains outside mountains, and there is infinite heaven beyond heaven. The young man walked out of the Wuji Heaven, cultivated the heaven and the earth and exchanged the gifts of yin and yang for great compassion. He held Xuanyuan, the sword of the holy way, and asked who in the world is responsible for ups and downs! Rivers and lakes, temples, north and south, countries in the Western Regions, aristocratic families, why should everything be clearly distinguished? The world should be unified!