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The alchemy that arose in search of the elixir of immortality is to use cinnabar, so cinnabar increases life.

Dreaming of cinnabar is a sign of good luck.

To dream of swallowing dansha indicates an increase in longevity.

The old man dreams of dansha, indicating that he will live a long and healthy life.

The patient dreamed of vomiting and eating dansha, indicating that he would soon be cured and ready to be discharged.

Original Dreamsmeaning Book

Dream Dansha, good luck. Those who dream of swallowing dansha have longevity. Menglin Xuanjie