Where had the lost lifespan gone?
It naturally went to mend the deficiencies of Heaven and Earth!
When Su Huan'an was young, he once ventured into an abandoned ancient cultivator's cave dwelling, where he didn't find any cultivation resources but discovered a travel journal of the ancient cultivator.
It was recorded therein that, at that time, cultivators often first endured bitter cultivation for a period of sixty years and then enjoyed freedom for three hundred years. If they could further advance during their carefree years, they could extend their carefree period even more.
Originally, Su Huan'an thought this ancient cultivator had gone mad after failing to break through in his cultivation, but judging from the fragmented information he had obtained from his ancestors, what the ancient cultivator said should all be true.
Otherwise, what was the point in cultivating immortality!