If he wasn't confident in summoning the Tianyuan Constellation Ancestor, he wouldn't dare be so reckless.
"Tianyuan Constellation Ancestor, what bold words you have," the Space-Time Island Ancestor said coldly. "Do you still think it's your supreme era? I've long surpassed you!"
However, the Tianyuan Constellation Ancestor paid him no mind, simply glancing at the Domain Divine Artifact sealing the Mountain and Sea Realm. With a slight frown, he waved his sleeve, causing streaks of black lines cutting through time and space to appear out of nowhere, silently traversing the void, leaving behind trails of black marks wherever they passed, crisscrossing billions of miles, as if dividing heaven and earth.
The black traces quickly converged, weaving a massive net in the sky that seemed to envelop the world. With a slight motion, it shattered the domain formed by the spire-like divine artifact!