C577 Normal Disciple

"The promotion of the Primordial Spirit is to store more mental energy, so what you need to do now is to cultivate your mental energy. When your mental energy is filled with the Primordial Spirit, you will know."

Lan Qing said helplessly.

Zhang Nan nodded and started to cultivate his mental energy.

However, the cultivation of mental energy was far more difficult than Zhang Nan had imagined