Chapter 1621: The Calculative Chiliocosm Sovereign Sky Heart!

"When did you discover it?" Lin Feng asked calmly.

Spacetime was his greatest secret. Even Chiliocosm Sovereign Sky Horn probably only knew about the secret of time. However, from Hyacinth's words, Lin Feng saw that he had said it very clearly. It was the secret of spacetime, not the secret of time.

The difference of one word was worlds apart.

This meant that Hyacinth knew it very well.

"Last time, you used the River of Spacetime to kill Ancestral Devil Blood Spirit in the Black Devil Abyss. In fact, after that battle, basically all the Chiliocosm Sovereigns already knew that you possess the secret of spacetime. Moreover, they regarded the River of Spacetime as the core power of your small chiliocosm."

Hyacinth did not conceal anything, and explained everything in detail.

"I see…"