I Become Stronger by Bragging

After transmigrating into the body of a military family, he just happened to arrive when the emperor was reclaiming military power? And he was even jilted at marriage? With the Boasting System activated, Li Xingchen advanced seven realms in three days by boasting! A gentleman takes revenge after ten years, while a villain takes revenge all day long. I, Li Xingchen, am not going to be a gentleman.