With Ye Fan, a Saint-level Alchemist, the Ye Family wouldn't directly take the Source of a True God for cultivation. That would be a waste.
The most efficient way is to concoct suitable elixirs with the True God Liquor for cultivation.
In the Ye Family's alchemy room, specially made elixirs for the Ye Family were freshly out and sent to the various Saints of the Ye Family to help their cultivation.
After the elixirs were prepared, Ye Fan also started to shut himself in for cultivation.
This time, Ye Fan was seeking to break through to the Saint-level Realm.
To break through to the Saint-level, one must comprehend the original principle.
Ye Fan has grasped many Dao principles, but it's still undecided which Dao he would use to enter the original principle.
Most Saints, even if they understood many Daos, they are only proficient in one.