Does the area of the Fa Ram's improved chi and nature have any potential growth limit beyond the borders of the Azure Hills and how much the spirit's reconnected?

Also, how does the Chi level of Fa Ram compare to lands outside the Azure Hills?

Edit: Also also, I've noticed in the books and the Patreon chapters there are a lot of parallels with Shennong, beyond just the basics, including with the stringed instrument playing. How much of that is deliberate, and how much just the way things turned out.