Immortality Yin Yang Jue

Is this world real? Need to verify! The secret of yin and yang, the pearl covered in dust, a little man is intertwined with the fate of the empire to solve the mysteries one by one. Immortality is a disaster, the emperor is crazy about longevity, and sends millions of troops to the south. The empire is in ruins, and the heroes are chasing each other. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.