C49 Guu Tianyi and Mu Qianqian Met Chu Jiangfeng..

Spirit Stones are energy stones born from the cosmos, imbued with pure Spiritual Energy. Since the Spiritual Energy of the world is patchy and inconsistent, cultivation is a challenging endeavor. However, using a Spirit Stone in cultivation can lead to significant progress with less effort.

Moreover, Spirit Stones are a more advanced form of currency than Essence Stones