The undefeatable realm represented the ultimate level of achievement of a stage.
This was why people call this realm the ultimate realm and the undefeatable realm.
Those who enter this realm were deemed to be undefeatable. Even when up against opponents within the same stage of cultivation, those in the undefeatable realm would have the upper hand. This was why everyone wanted to get into this realm.
Ling Xian was no exception.
His dream was to rise above to the highest point in Taoism and peer down on everyone like an undefeatable God.
Therefore, he vowed to reach the undefeatable realm of every stage he was at. Because that would be the only way for him to walk on his road to being undefeatable!
However, the undefeatable realm is not that easy to get to. Only those with insane natural talent can enter that realm.