Xue Ying relied on karma to determine it. Being a piece of land in the Primal Chaos Void, the 'Bright Star Planet' operated according to the Supreme Law. Scouting using karma wasn't something done easily, but reaching the Cosmos God Realm, the Supreme Law was forced to a retreat. Naturally, karma was shapeless. Xue Ying had just reincarnated into this world. As an extremely new soul and an embryo, he naturally was only connected via karmic ties to two people—his father and mother.
His mother was naturally the white-robed girl that currently had him in her womb still.
And the other would be the black-robed male that was currently fighting with an enemy not too far away.