After Exile, an Empire as Betrothal

Song Yun spends her fortune securing a pardon for her exiled husband, only for him to plan to demote her to a concubine. She leaves, reclaims her identity as a wealthy merchant, and falls in love with Emperor Pei Jiuqing during his incognito travels. Her former husband's retaliation eventually intersects with a rebellion that puts both her resources and judgment to the test.