My Cousin Has Become a God in Martial Arts, I Hug My Thighs Tightly

In Nan'an Fucheng, the Jiang family has declined, and a Jin'an square has shaken up the family structure. Jiang Yuan traveled through time and was reborn, with the system in his body; Jiang Shi'an was extremely talented and broke the situation with his fists. Aristocratic families, sects, dynasties, the general situation is ups and downs, who controls life and death.