Profound Pure Guard

In the old Jing dynasty, evil spirits and monsters ran amok. He set up the Xuan Qing Guards to supervise the world, eliminate evil, and punish evil. Shen Hao transmigrated here and used four years to climb from an ordinary soldier in the Xuan Qing Guards to the position of a small flag. However, with his background, it was almost impossible for him to go any further. One day, he suddenly discovered that there was a dragon in his body, an ancestor of all dragons that fed on living souls and immortal souls! Every time he killed an enemy, the dragon would jump out and lure him to devour the enemy's soul or Demon Core. Even his cultivation base would start to improve rapidly. Shen Hao: I'm just handling a case. How am I invincible?