On the one hand: This is a great book, it's well written, the protagonist is unique and fascinating, the world is interesting, the characters are great, the plot is gripping, really, everything (with one exception) is amazing.
On the other hand: There's that one exception. Because for whatever reason, I've found I really don't care for cultivation/xianxia elements in books; I just find them really tedious. And while book 1 gave me the hope that cultivation was going to be a background element (because while the *riders* were cultivators, the protagonist, as a dragon, was not), this book double and trippled down on the cultivation elements. Apparently we're just really, really doing this, and not just as part of the setting but as critical plot elements.
...which is...fine. It's a great series, I love the author, I'll put up with it. I know it's a personal quirk of mine. Some people hate litrpg elements, or romance, it's fine.
Still wish there was about 100% fewer references to "mana density" though.