The Dragon Roams the Tang Dynasty

Su Rong transmigrates into the body of a prisoner stationed at a Tang dynasty frontier outpost. It all started when his companion desecrated the spirits of fallen frontier heroes while on a trip. Now he has no choice but to take on a task: fulfill an old woman's dying wish. Ding! You have obtained the useless “Side Profession Master System.” Other people's Systems give them divine powers. What kind of rubbish did mine give me?