Prequel to Nine Paths

He was a child picked up from a cave. He had no father, no mother, and no worries. Perhaps, such a person is more suitable for traveling far away. There are tens of millions of ways in the world, so what kind of way does he cultivate? There are millions of roads in the world, so which one does he follow? The world is so big and time is so long, can he see through it? What choice will he make at the last moment of his last life?