In short, Dragon Tiger Mountain simply couldn't afford to nurture this ancestor...
Wishing to take advantage of Daoist Rhyme, yet not wanting to hand him over to Heavenly Master Xu and being unable to support him, it naturally made the most sense to send him to themselves.
The South Peak Emperor couldn't help but laugh and cry at the scheming of Xu Jinghui and the others, not taking it to heart but instead fully concentrating on his own concerns.
He was even somewhat pleasantly surprised—he wasn't lacking in elixirs; what he lacked was Daoist Rhyme!
In the Mortal Realm, there was scarcely anything that required him to take action and expend Immortal Spiritual Power, except during cultivation, when he would use Immortal Pills, so he had a very large surplus of Immortal Pills in his possession.
The rapid pace of Duge's cultivation was good news for him.