陶弘景的《名医别录》曰：伏翼生太山川谷及人家屋间，立夏后采阴乾天，鼠屎

Hongjing "doctors do not record", saying: <br><br>Inter-volt wing too raw mountains and valley people house, days after the beginning of summer picking dried, raw rat feces Hepu valley, Nov Dec mining. Hongjing said: V-wing non-white, Hanged Man, not clothes. Su Gong said: V wing, that fairy mouse also, in the mountains well, eating all milk stone essences, all Chitose, white snow, head of a crown, as big as a dove magpie. Dried clothes, it is healthy fat, longevity life Chitose. <br><br>Hongjing think black bat can not eat, but white can, eat can live longer.

Tao Hongjing's "The Book of Famous Medical" :<br><br>Fu Yisheng Taishan Chuangu and people's houses, after the summer to pick a cloudy day, rat poo born Hepu Valley, November December harvest. Tao Hongjing: The volt wing is not white, upside down, not to serve. Su: Fu Yi, that is, the fairy also, in the mountain hole, eat the milky milk, are thousands of years old, pure white as snow, the head has a crown, as large as a dove. Yin dry clothes, fat, long life a thousand years old.<br><br>Tao Hongjing thinks that black bats can't eat, but white can, eat can live long.

Tao Hongjing's "distinguished doctors" said:<br>Fu Yisheng lives in the valley of Taishan River and other houses. After summer, he picks up Yin and dry sky. Rat excrement lives in Hepu valley. He picks it in November and December. Tao Hongjing said: Fu Yi is not white, hanging upside down, not to be taken. Su Gong said: Fu Yi, that is, the immortal mouse, in the mountain hole, eating milk stone essence, all thousand years old, pure white as snow, with a crown on the head, as big as a dove magpie. Yin and dry clothes make people fat and healthy, and live a long life.<br>Tao Hongjing thinks that black bats can't eat, but white bats can live a long life.