After Lu Guo obtained the 'Changchun Secret' follow-up technique, his cultivation speed increased rapidly.
In the first year of breakthrough, becoming a cultivator of the first level of Qi Refinement, he continued to cultivate diligently for another year, breaking through to the second level of Qi Refinement.
Then, in less than two years, he broke through again, becoming a cultivator of the third level of Qi Refinement.
Reaching the same realm as Fang Xi when he first crossed over!
And at this time, Lu Guo was only twelve years old!
Although the breakthrough in the early stage of Qi Refinement is somewhat easier than in the middle and later stages, he could still be considered a little genius.
The reason why his reputation was not prominent was solely because he was in a remote area and overshadowed by someone else.
'Ruan Dan,' who was in the same batch of young cultivators as Lu Guo, made rapid progress after apprenticing under Ruan Xingling.
Five years later, he had already broken through the bottleneck of the early stage of Qi Refinement and entered the mid-stage of the fourth level of Qi Refinement!