This is also why Yuan Ying cultivators in the Cultivation World try their best not to fight on the ground but prefer to battle in the Thirty-Three Heavens.
After a Thunder Strike Technique, Li Shiming immediately retracted the Nascent Soul Dharma Form, allowing the Fire Thunder Nascent Soul to return to his body.
That strike just now consumed one-tenth of the spiritual power in his body. He also found that the spiritual power consumed by the attacks of the Nascent Soul Dharma Form was many times greater than using his body to attack.
The thunder strike he performed had five times the power of a normal thunder strike, but it consumed ten times the spiritual power.
This is the price of being in combat mode with the Nascent Soul Dharma Form, exchanging more spiritual power and spirit for a stronger attack power.