223 The Underworld Dragon Breaks Through the Demon King Stage, and the Battle for the Crown Prince Begins

After commanding the Underworld Dragon to land, Yang Chen looked around and nodded in satisfaction." Not bad, the environment here is indeed quieter.""

Immediately, Yang Chen opened his right hand. The Dao Integration Pearl flickered with golden light and slowly appeared in his right hand.

Looking at the Dao Integration Pearl, the Underworld Dragon's dragon eyes were filled with desire. The Underworld Dragon could still clearly remember that it was because of this Dao Integration Pearl that it was able to break through to the Demon Venerable realm.

Now that the Dao Integration Pearl had appeared again, did that not mean that it could break through to the Demon King realm?

As expected, Yang Chen laughed and said,""Underworld dragon, you're about to break through to the demon king realm. Are you ready?"

When the Underworld Dragon heard this, it quickly nodded its head.