The extreme state of the Heavenly Dharma level was to strengthen the cultivator's power with the utilization of the heaven and earth's power!
However, it wasn't the power of heaven and earth that Zhong Yue was utilizing now, it was the divine rays of the three suns.
He broke the balance of the superimposed magnetic fields to let the divine rays in so that his sabers could absorb the divine rays and grow strong beyond limits.
It truth, Zhong Yue was weaker than Reverse Emperor. Although, their arts and skills seemed to be on par with one another, Reverse Emperor was much stronger in the control over his attacks.
After all, Reverse Emperor was a emperor in his past life, there was plenty of time for him to delve and attest his arts and skills. Moreover, his experience and knowledge were simply beyond Zhong Yue's current reach.