Sister-In-Law, I Am Really My Eldest Brother

The gold medal undercover agent's soul penetrated Daqian and killed the twin brother at the beginning. As a last resort, he replaced him as the county captain. I just wanted to be a good official, but my eldest brother secretly became a bandit. In order to protect his eldest brother's reputation from being damaged, he had no choice but to do his best to suppress the bandits, solve the mystery, turn the tide from collapse, and help his eldest sister-in-law on the top of the mountain.