Generations by generation, the Kang Empire had only bore a son. Generation by generation, having a female born is a treason, and crime. Until someone from the outer world accidentally transmigrated into this life, She became the seventh princess. She was forced to be a male prince all her life until she got out of the palace to fight the war, The old Emperor grateful for her honor and loyalty. The old Emperor, assumed he was gay, gave a decree that hes now engaged to the most dangerous Duke in Southern Ming Empire.