Forest of a Thousand Lanterns was great, but Kingdom of the Blazing Phoneix was even better. Because wow.
I think Dao really stepped up with the world building in this one, and it wasn't in an info dump nature. There was a lot of just exploration of different areas of the world (I didn't have the gorgeous map with me) instead of just the Great Forest, and I think that made it a lot easier for me to get a sense of the world Forest of a Thousand Lanterns is set in.
Jade goes on this almost quest across the lands to search for magical god-related artifacts, and that's really why I feel like the worldbuilding was developed a lot better.
In general, Kingdom of the Blazing Phoenix is just a different book than Forest of a Thousand Lanters, and you really can read Kingdom without reading FOTL.
It's a whole different type of narrative structure--not a descent to evil, but a rising to goodness through a quest of sorts with a ragtag found family, and I just really loved how Jade found these amazing people as part of her life.
Plus, I think Dao really takes the concept of Snow White and reinvents it well through her story--it's not rigidly to the tale, but it takes a lot of elements and puts them into her own storyline, which I really enjoyed.
I think part of the reason why I liked Kingdom more was because I connected more with Jade than Xifeng was just because she wasn't . . . evil. She's kind and humble, and Dao didn't just say "Jade was a good person," she showed it to us and not through the bad trope of "giving your servant stuff."
I always find it irritating when authors try to make royalty "nice people" by having them give stuff to their servants, but still not really treat them as people, and I think Dao did a good job of not doing this, and having Jade treat everyone on the same level, without being a total martyr.
Honestly, my only critique would be that some of the quest portions felt a little too convenient. Like, everything fit together easily, and it was all set up so that the protagonists could succeed. I kind of wanted more struggle in finding what way the protagonists could go, finding how they should proceed.
The quest almost felt too laid out for them--like two artifacts were conveniently in one place, so they didn't have to travel to X place. It all fit together, and although it was satisfying, I kind of yearned for that extra level of struggle and desperation of the characters.
But overall, Kingdom of the Blazing Phoenix was a great read I absolutely blazed through, and I definitely recommend you pick this one up, even if you didn't like Forest of a Thousand Lanterns! It's a very different type of story, and great for someone who likes fairytale retellings with a twist.
(I do still recommend you pick up FOTL though, as it adds a certain level to the book and Xifeng's nature.)