From the Start, the Government Gives Me a Wife. Don't Send Me to the Borderlands

The Great Qian is vast, yet short of men, and the Rouran in the north invade again and again. To reverse the imbalance between women and men, the Great Qian Empress issues a decree: every man must marry at least three wives, and anyone who disobeys will be exiled to the frontier. Qin Yang transmigrates to the Great Qian and hopes to pass the imperial examinations, but the authorities force him into marriage. Unwilling to be exiled to the frontier, Qin Yang has no choice but to obey...