Song Yan Ning sensed the rich concentration of spiritual energy and led Liu Qingshan forward.
"The air here seems particularly fresh," Liu Qingshan took a deep breath. He didn't know what spiritual energy was, but he could feel the change in the surrounding air.
Song Yan Ning smiled and nodded, "We should not be far from the spiritual source." She was truly happy now, this was the first time she had felt such dense spiritual energy since she had come to Earth. It was a pity there was a time limit, otherwise she would bring Qin Yushen with her next time.
"Do all cultivators need spiritual energy?" Liu Qingshan was very curious about cultivation now and wanted to learn more.
"Mm," Song Yan Ning nodded. If there was enough spiritual energy for her to cultivate with, she might have already made a breakthrough in Foundation Establishment and lifted the seal inside her body to return to the Demon World.