Siheyuan: Xiao Jia's Counterattack

[Lightly violent, not single, semi-invincible, no demonization, no magic change of timeline] Chen Xuan traveled to the courtyard and replaced Jia Dongxu on his wedding night. However, he was not bound by the courtyard. Instead, he took root in the times and wrote a legend of his own. Over the decades, Xiao Jia has blown through the wind, rolled through the waves, walked through the golden years, and witnessed the glorious era. He personally created Bureau 749 and became the most mysterious organization in the world. At home, he is a cadre Jia with a simple style and a firm mind. Abroad, he drinks the strongest wine and rides the most beautiful horses, and is the leader of 749 who is feared by the world. He is An Lan who is "the top of the martial arts, who controls the world, and seeing me An Lan is like seeing the sky". He is Mr. Bei Xuan who "you have to teach me how to do things." He is Chennan, the great demon who destroyed the shrine with one strike from the Seven Demonic Swords. He is the most handsome boy in the courtyard, Xiao Jia...