Xuan Yuan-zu came to a quiet room and sat down opposite the summer Chen. Xuan Yuan-zu's expression became heavy. He said in a deep voice, "Can you show him the secret key of Lingyang?"

"Of course, look at it, old man."

When Summer Chen turned his hand over, the Lingyang secret key appeared. There was nothing special about the two Lingyang secret keys. So he handed the Lingyang secret key directly to the ancestor of Xuan Yuan.

Xuan Yuan-zu took the secret key of Lingyang and examined it carefully, even with Zhenqi, but found nothing. After a long time, he sighed and said, "It is rumored that the secret key...