A Memory Called Empire (Teixcalaan #1) by Arkady Martine

Layered, nuanced, and startingly imaginative, A Memory Called Empire is a sprawling space opera debut that puts a rare new stamp on the genre.

Ambassador Mahit Dzmare travels to the capital of the interstellar Teixcalaanli Empire, eager to take up her new post. She arrives only to discvoer that her predecessor has died, and no one will amit that his death wasn't accidental--or that Mahit might be next.
   Now, Mahit must discover who is behind the murder, rescue herself, and save her small but fiercely independent mining station from Teixcalaan's unceasing expansion, all while navigating an alien culture that is all too seductive, engaging in intrigues of her own, and hiding a deadly technological secret--one that might spell the end of her station and her way of life, or rescue it from annihilation.