The jade artifact in Wang Qi's hand was called the Tianyi Spirit Jade. It was used to preserve special Spiritual Energy. A freshly refined Tianyi Spirit Jade possessed a highly peculiar property.
Within it, the Spiritual Energy's intrinsic form was a constant, and moreover, an integer.
In other words, when it came in contact with any special Spiritual Energy, the Spiritual Power inside would be transformed into that specific type of Spiritual Energy. Even if you input Immortal Energy, the Spiritual Energy inside the jade would be converted to Immortal Energy.
Immortal Energy could be refined to increase one's Cultivation, and also to refine Immortal Artifacts. However, for a Modern Cultivator, such uses were a huge waste. Its real purpose was to amplify certain tiny and undetectable special Spiritual Powers for research. This was essentially the Spiritual Energy version of a Polymerase Chain Reaction.