Mo Wen understood many esoteric rules in the primeval space. Among them was the very rarely seen esoteric rule for thunder, the esoteric rule for wind and the esoteric rule for cloud. These three esoteric rules were related to the three Glory techniques that he had cultivated. They were the main esoteric rules that he focused on mastering.
As for the esoteric rule for fire and the esoteric rule for water, they were related to Yin and Yang Qi, so naturally, they could not be ignored.
Of course, the esoteric rules that could be derived from the primeval space were not just limited to these few. Mo Wen could only cultivate a small number. In reality, there were countless esoteric rules. It was also possible for other esoteric rules to appear. In theory, there were innumerable esoteric rules that could be derived from the main law.