The traditional conception of " Yanlu " defines as an approach which officials and people offer information to their emperor in its wide denotation .

To express the XML functional dependency which give rise to data redundancy,various complicated constraints on functional dependency are analyzed with a path language proposed on DTD basis to give stronger expression to the navigation and location for an XML document.

Being observed from the language approach,the modern Chinese literature is the combination of several language resources old and new,home and abroad,such as European language,classical Chinese,oral dialect and so on.