Two Months!
I stayed for a short time in my estimation. All I did was to allow for the energy coming from outside to go mostly towards my shadow world while letting the few left to be absorbed by my two dantians.
However even with such control, I felt at a moment that my two dantians swell and reached their limit. I knew I had to stop.
Trying to bite more than I could chew wasn't wise.
So I opened my eyes, exhaled a breath that extended for half a metre away. Even after all this time of cultivation, my energy didn't show any signs of changing from its pale blue colour.
I didn't know how long it would take for me to train and evolve my energy to the next level.
As for my base, I didn't want to take such a step before getting my energy higher than the blue grade at least.
If the energy followed the same rule of the grading system in the apocalypse, then it would become silver, gold, dark gold, then black.