While Xi Mingze gathered all of her spiritual energy into her Dragon's Soul, Yuan gathered his spiritual energy in his Empyrean Overlord.
"Whenever you are ready." Xi Mingze said to him a few moments later.
"I am ready." Yuan stood there with a menacing aura around him.
"Then here I come!"
Xi Mingze stepped forward with her right foot as she propelled her spear in a thrusting motion.
"Supreme Dragon Lance!"
The Dragon's Soul released a massive golden beam of light the following second, which resembled the Heaven Splitting Sword Strike that Yuan released at the same time.
When the two massive beams of light collided with each other, the energy scattered by the impact was so powerful that it shook not just the Ancient Dragon City but the entire world, so the other cities also felt it.
As for the formation that protected Yuan and Xi Mingze, it collapsed almost instantly.