This profound truth about the Dao of life and death aligns perfectly with the ancient legend of the creation of heaven and earth, where "the cosmos was chaotic like an egg," and "upon splitting, the clear essence formed heaven, and the muddled essence formed earth."
And the way the ancient immortals transformed into myriad beings at death just so happens to match the Dao of Unity of Heaven and Man that Chen Dengming had comprehended.
Like in ancient times, to the eyes of those whose wisdom had just begun to awaken, the heavens and earth were like people, all subject to life and death. The sun dies every evening and is reborn each morning; the moon dies on the new moon and comes back to life on the full moon. Plants and trees all die in winter and revive in spring...
Life and death are cyclical.
...
Chen Dengming's thoughts had completely sunk into the contemplation of the Rhyme of Life and Death. He felt no fatigue.