Either his Cultivation had reached the Great Grandmaster realm, or his Sword Dao had been honed to the Extreme Realm. Otherwise, even if Lone Immortal Ye was willing, Immortal Bai probably wouldn't bother with him.
"Great Grandmaster... Sword Dao Ultimate Realm..."
Martial Arts Cultivation was divided from the Ninth Grade to the First Grade; above that were the realms of Grandmaster and Great Grandmaster. And the Technique Realm consisted of entry-level, Minor Success, Great Success, Perfection, and the Extreme Realm—where Skill Nears the Dao.
Reaching that realm earned one the respectful title of "Land Immortal," meaning they had achieved "Extreme Mortality."
