"Tai Ping Yu Lan" Volume VIII quoted "Bai Ze Tu": The essence of jade is named Dai Wei, who looks like a beautiful woman and wears clothes. See it by the name of the peach thorn, then get.
In addition, Ming_Zhu Moubu's "Pian Ya" volume five quotes "Bai Ze Tu": The essence of yin and yang changes is Dai Wei.
Note: The essence of jade seems to be "successful." See that article.