Back then, their resources must have been exhausted.
Phoenix muttered to herself.
After all, how terrifying was a weak Tenth-Order civilization? How deep were its foundations?
Just compare it to the Elemental Civilization ruins before them, and one would understand how profound the foundations of this kind of weak Tenth-Order civilization were.
A civilization that possessed a weak Tenth-Order being would inevitably have a sufficiently large number of Ninth-Order beings.
If its Ninth-Order population was not large enough, how could it possibly produce Ninth-Order beings with a Perfect Dao Foundation? How could it possibly break through to the weak Tenth-Order? Some ancient weak-world civilizations had accumulated their history generation after generation, cultivating deliberately over alternating stretches of hundreds of thousands of years. Altogether, they might have had thousands of Ninth-Order beings! How could such a massive weak Tenth-Order civilization possess only this meager bit of wealth? Generally speaking, even a starved camel was larger than a horse. Yet Moon God Ji had casually nurtured a crude Mother River Civilization, thrown down the Moon God Monument, and come to these ancient ruins of her birthplace to seek resources. On the other hand, she did not seem particularly wealthy either.
Of course, she had guessed at the circumstances of that ancient war between the Elemental Mother River Civilization and the Buddhism and Taoism Civilization, but she would not say it aloud.
"Half-element lifeforms were originally far weaker than pure elemental lifeforms, but once they were transformed into the structural system of the Mother River Civilization, they would vastly surpass them!"
Phoenix wore an expression of admiration as she said, "Back then, you left these ancient ruins in a mutated form far weaker than your own race's civilization. Perhaps you were not accepted then, but now, you have long surpassed the ancient ancestors!"