For Lu Xiao, Yan Yun was like a blank slate with nothing on it.
He even had to teach her step by step, hand in hand, how to even sense the most basic Inner Qi.
But when it came to the basics, Lu Xiao himself wasn't very knowledgeable.
After all, he didn't cultivate step by step through the regular channels either.
Before Heavenly Man, it was his master who taught him.
The lessons were a hodgepodge, and quite chaotic; you could hardly distinguish what was useful from what was simply Xuanyuan Panshi, the old man's bad taste.
It wasn't unlike licking an iron pole in minus twenty-something degree weather...
If you were to say that had anything to do with cultivation, Lu Xiao would be the first to disbelieve.
As for after becoming a Heavenly Man, he didn't improve his strength step by step either.
He came up with the method of absorbing Mutated Crystals instead.
That thing... was truly fast.