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Wu Gang looked up at the sky and said, "The Heavenly Dao is vast, its principles more complex than the stars themselves, a sea of Dao filled with endless variations. The same principle understood by different people will inevitably yield different results.
No one dares to claim they can perfectly replicate the image of the Heavenly Dao. What they can lead you into is only the Heavenly Dao as they perceive it, a version of the Dao that comes from their own countless factors, not the entirety.
Perhaps it's a shortcut, but it can also lead to premature closure of thought, hence, when one tries to comprehend the Heavenly Dao themselves, they cannot cross this great divide, forever stuck before the chasm drawn by the other's understanding of the Heavenly Dao and unable to advance!
Even an incredibly gifted individual who manages to leap over it must expend much more effort and energy, and it is not even a certainty that they will succeed.