Lu Changsheng secluded himself for one hundred and forty years, advancing from the second level of the Unity Realm to the very peak of the fifth layer, a rate of cultivation that was simply astounding.
It took Situ Kong two thousand years after leaving Mount Shu to cultivate from the ninth layer of the Void Refinement Realm to the second layer of the Unity Realm.
Lu Changsheng had merely secluded himself for one hundred and forty years, without even descending the mountain for experiential growth, yet there were no signs of him becoming possessed by his energies, and his cultivation did not stagnate midway.
In fact, thanks to the functionality of the Disciple Apprenticeship Simulator that allowed for simulated battles, Lu Changsheng could simulate fights against various unparalleled geniuses whenever he encountered a bottleneck.
The opponents simulated by the Disciple Apprenticeship Simulator included past Sect Leaders and Supreme Elders of Mount Shu.