She Who Became the Sun (Relié)

In a famine-stricken village on a dusty yellow plain, a seer shows two children their fates. For the boy, greatness. For the girl, nothingness. In 1345, China lies under harsh Mongol rule. For the starving peasants of the Central Plains, greatness is only found in stories. The Zhu family is mystified as to how Zhu Chongba, their eighth-born son, will achieve his lofty future. But for a daughter, no matter how clever or capable, an early death would be no surprise.
Yet when a bandit attack orphans the two children, it's Zhu Chongba who dies. Desperate to survive, his sister steals his identity to enter a monastery. There, disguised as a male novice, Zhu learns she can be ruthless to avoid her fate. But when her sanctuary is destroyed, Zhu is cast back into the war-torn world. To change her ending, there's only one thing she can do : claim her brother's great destiny as her own.