It's peach blossom pastry.

Song Cheng transmigrated and became a blind errand boy in a medicine shop in a remote town.
Fortunately, after he found a wife who did not disdain him, his "Golden Finger" also followed.
Demons and ghosts roamed the Chaotic World, Profound Techniques went with Occult Sciences, Divine Weapons dazzled the cosmos, the Yin and Yang were inexhaustible.
Song Cheng did not seek to dominate as a king, he simply wished to live his life well.
...
This is the story of a person with Longevity, who walked through long years and witnessed innumerable Dynasties.

Immortality Path: From the Blind Man at the Pharmacy

    It was a transparent water crystal bottle, containing some unknown powder that appeared gray, giving off a very thin, light feeling, somewhat like the appearance of "burned paper money ground to dust."


    "Add this, just a little is needed.


    Another main ingredient was the supernatural elements from the Ghost Servant.


    Those supernatural elements were normally untouchable by humans, but when they fell onto the Ghost Servant, they were somewhat filtered, weakened a bit.


    Yet, even so, people still couldn't directly absorb the power contained within the supernatural elements.


    But this ash seemed to build a bridge between the supernatural and humans, then used the supernatural elements as a guide to absorb the Yin Qi of heaven and earth to enhance the Divine Soul.


    However, the teacher didn't say where this ash came from.


    Next time... you should ask Sister Fox Immortal."


101, 102. The clouds are bizarre, and the Divine Soul gathers objects for Manifestation (thanks to the alliance leader 'Boole')_4