Digital images of zi wu zheng qi, a book on choosing dates. Date: Unknown. Author / scribe: Unknown.
The original materials were sold to an anonymous collector in 2010.
"The original materials are owned by Pan Yushan of Duyun, Guizhou.".
"The original materials have been returned to their owners, who remain anonymous. The EAP143 project believes that a number of the original manuscripts were subsequently sold to different private collectors following digitisation.".
The original manuscripts are owned by Wu Xingben.
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