Song Wen set down the jade slip in his hand, his brow furrowing slightly.
He had just carefully examined the pill formula for the Gu Resonance Pill.
The Gu Resonance Pill was not particularly difficult to refine. With Song Wen's current alchemy skills, he was fully capable of refining it.
However, the spiritual herbs needed to refine the Gu Resonance Pill were not easy to gather.
Among them was a spiritual herb called Seven-Life Zhi. It could not be cultivated artificially and could only be nurtured naturally by heaven and earth.
Song Wen flipped his hand and took out the jade bottle containing the Gu Resonance Pills, then summoned the peak third-rank Shadow Gu from within his body.
He currently had three Gu Resonance Pills. After the Shadow Gu consumed them, it might be able to break through its bottleneck in one stroke and grow into a fourth-rank gu insect.
Even if it could not advance the Shadow Gu, he could still verify whether the Gu Resonance Pills were effective on it. It would not be too late to consider how to refine the pills afterward.
When the Gu Resonance Pill appeared before the Shadow Gu, the insect became extremely excited. Its body instantly enlarged, and it swallowed the pill in a single gulp.
The next moment, the Shadow Gu sent Song Wen an intense message of hunger.
With a wave of his hand, Song Wen produced the corpse of a second-rank giant python several zhang long inside the cave abode.
Yet, somewhat to Song Wen's surprise, the Shadow Gu did not pounce on the python's corpse. Instead, it circled Song Wen ceaselessly, apparently finding the corpse lacking in spiritual qi.
Song Wen curled his lip.
The little thing sure had high standards.
The python corpse had been presented to