Jade City

This is some of the most impressive world building I've read in ages. Lee blends some of the best mafia tropes with a unique magic system and then drops it in the middle of a Hong Kong action film. Her characters are well-rounded, compelling, and faced with incredibly difficult choices. The plot twists and turns so you're never quite sure what's going to happen. There were definitely pages I had to re-read because I just couldn't believe what had happened. The amount of research poured into this is truly astonishing, and I'm very excited to continue the series.