Am I an Immortal? Isn't this a Rumor?

In a small antique shop, a young man named Yi An stumbles upon an extraordinary discovery that challenges his perception of reality. As he watches a TV program claiming that a long-lived being named Yi An has been present at every crucial moment in East Asia's history, he dismisses it as a mere rumor. However, his skepticism is short-lived, as a snake spirit from the Song Dynasty appears at his doorstep, holding a "fang stone" and sporting a shy smile. The young man is shocked to learn that his name is allegedly engraved on the Imperial Seal of the Song Dynasty, leaving him bewildered and questioning the truth behind the legend. As the inheritor of his grandfather's old antique shop, Yi An has developed the ability to travel through time and space upon touching ancient artifacts, allowing him to master unique skills from different historical identities. As he delves deeper into the mysteries of his family's past and the secrets hidden within the antique shop, Yi An begins to uncover the astonishing truth that the rumors may indeed be real.