Jade Fire Gold by June CL Tan

In the Shi Empire, Ahn lives a quiet life with her adoptive grandmother until her latent, dangerous powers emerge, drawing the attention of a cult of priests. Altan, the last surviving heir to the Dragon Throne, seeks vengeance against those who destroyed his family. When their paths cross, Altan sees Ahn as a means to reclaim his throne, while Ahn hopes to uncover the secrets of her past. Their alliance is fraught with tension, as both grapple with trust, identity, and the weight of their responsibilities.