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Gu Shen burned the butterfly eggs while Blazing Fire devoured the source matter within the white cocoons.

As he walked, he filled in the underground map of F Zone within his Mental Sea, but he vaguely felt that something was wrong...

"Are there a little too many butterfly eggs here?"

Chu Ling's voice came from his Mental Sea. "A single mating session between Empress Birdwing Butterflies can produce three hundred butterfly eggs. Of course... those figures are from before their supernatural mutation."

After the supernatural mutation.

Those figures no longer held any meaning.

These giant moths had all burrowed underground.

"One mating session, three hundred butterfly eggs, and roughly a hundred in the entire population..." Gu Shen suddenly asked, "The biggest one I killed just now... was it male or female?"

"If their reproductive organs did not change after the supernatural mutation... then the one you killed was male."

Chu Ling fell silent for a second after saying that.

She understood what Gu Shen truly wanted to ask.

It was simply that she could not retrieve data from the Holy City Research Institute.

The Main System maintained dense control over Sang Continent Grotto.

She could only investigate by retracing the mental images Gu Shen had just seen.

A second later, the findings were somewhat chilling. "Including those that appeared aboveground, they were all male butterflies."

All male butterflies!

Gu Shen's expression darkened abruptly. He stared fixedly at the end of the underground palace. Behind him, a blazing sea of fire illuminated the entire Earth Cave and stretched toward an unknown distance—

Countless butterfly eggs trembled within the flames.

One after another, they had no time to struggle. At the brink of death, they could only force out the sound of their own heartbeats.

The sound was weak, but it accumulated.