One world focuses on its depth, another one on its breadth.
Which one is superior, depth or breadth? It's hard to say.
However, for Pei Xuanjing, he felt he had come to the right place.
In the Grand Ming World, he had already reached the peak. Each step forward required careful exploration and pioneering, without any reference.
Although this world was not as broad as the Grand Ming World, the Dao of Qi refinement provided him with great inspiration and reference.
Therefore, Pei Xuanjing spent twelve years studying the skills of this world, continuously modifying and adjusting his Shenxiao Heaven's Intention.
After twelve years of research, his understanding of the Dao of Qi refinement far exceeded his previous knowledge.
It's safe to say that many of the things which he was able to use to rapidly improve his power via the simulator, were understood superficially, but not profoundly.