Under the natural thunder power, Li Yunjing's mind and the "Celestial Thunder Emperor Seal" merged together, feeling indistinguishable from each other.
With that sense of connection, Li Yunjing felt the "Celestial Thunder Emperor Seal" as part of his own body.
Reintegrating the natural thunder power along with his own divine thoughts and melting some materials with thunder power, he added them to the "Celestial Thunder Emperor Seal", greatly improving the quality of this magical artifact.
In no time, the quality of this middle-grade magical artifact was elevated by Li Yunjing to a top-grade magical artifact, with power that was incomparable to its past.
"Whoosh..."
Suddenly, at the movement of Li Yunjing's mind, the "Celestial Thunder Emperor Seal" floating in front of him turned into a stream of light and rushed straight to his brow.
The next moment, there was nothing in front of him, and the "Celestial Thunder Emperor Seal" had already disappeared.
