I, the Bloody Marquis, Am Considered a Weakling

On the day I traveled through time and became my wife's son-in-law, I sealed my wife's throat with a sword of Bai Yueguang. All the guests in the hall were shocked and called me crazy. My wife pointed at me tremblingly: "Did you know that he is the son of the leader of the martial arts alliance..." I wiped the blood on my sword and chuckled: "Not anymore." They don't know that I was already at the pinnacle of martial arts before traveling through time. Little did he know that this body contained the prince's secret.