The Empress Sent Me to Marry for Peace, So I Served Heaven and Put Down the Rebellion!

Li Jishi transmigrated to another world and became a prince of Great Zhou, only to be sent by the usurping empress to marry into the Northern Barbarians. Day one, the marriage alliance: “A prince sent off to marry? What a deal!” Day two, arrival among the Northern Barbarians: “Father-in-law, I really want to be emperor! You have troops, I have legitimacy. If we join forces, won't we solve the problem of nomadic peoples being unable to restore the rightful dynasty?” Day three, the grasslands uphold the rightful dynasty! Raise an army and march south to put down the rebellion! Day four, love your mom. See you at the Xuanwu Gate. Day five, no one understands the dangers of nomadic peoples better than I do. Day six, my dear in-laws, if others can't find you, do you think I can't? Day seven, I conquer Langju Xu and unify the realm.