For an Immortal Emperor, shutting themselves away in closed-door cultivation for a hundred thousand years would mean that the ordinary disciples of their sect would have been replaced by several, if not dozens, of generations.
No wonder the Ancestors of the Holy Lands usually hide away in the back mountains to cultivate, reluctant to summon their junior disciples, because it's possible that by the time they emerge from one session of cultivation, those juniors would be gone...
"Longevity, this time you're back, we must have a good drink,"
Grandmaster Taixu was the picture of vitality, seeming younger with each passing day.
His reunion with Fairy Qingxia resolved the matters of his heart, and his cultivation soared, having reached the level of a Daluo Golden Immortal.