The main theme of Emperor Pan's Heavenly Divine Great Dao Scripture is to transform oneself into Pangu, rule Heaven and Earth, and direct all the gods.
Therefore, when one has cultivated Emperor Pan's Heavenly Divine Great Dao Scripture to the end, one inevitably needs to confirm it with Heaven and Earth. Only in this way can one fit into Heaven and Earth and achieve ultimate fruition.
However, the Prehistoric World is already shattered, and it is undoubtedly impossible for Jiang Chen to verify it with Heaven and Earth. Admittedly, Jiang Chen can verify with the projection of Pangu, which compensates for the deficiencies in the techniques.
But the transformation of Pangu into Heaven and Earth is essentially a kind of progress, and it's the first step Pangu took towards the Great Dao.
Being unable to confirm with Heaven and Earth might not stop Jiang Chen from achieving Tao, but it will inevitably affect him, causing imperfections in the Great Dao and small flaws.
