During Qi the Great Cultivator's lecture, because Li Shiming unexpectedly kept up with his rhythm, the lecture lasted an incredibly long time, and the content reached the pinnacle of his own realm.
Close to a hundred Nascent Soul Cultivators had their spirit and energy affected. Not only did Li Shiming benefit from it, but Qi the Great Cultivator also gained advantages.
Of course, this wasn't the plundering cultivation technique of the Demon Sect, but rather a transformation during the lecture. When the minds of the listeners are influenced by the lecture, they will naturally adjust their spirit and energy to align with the lecture's resonance.
This spirit and energy will be transformed, and losing them won't have a negative impact on the listeners. It merely causes short-term dizziness and weakness, which quickly recovers.
The cultivators participating in the lecture knew this, yet they felt it worth the cost.