Grinding Base Form Rock art in Fangcheng: the Rudiment of Jade Bi.

The rock art in Fangcheng is mainly made up of various motifs based on cupules on the surface of rocks as well as some others made by carving and grinding. Fangchegn rock art belongs to a part of history, recording early human civilization and is a vivid "history book" carved on rocks. Fangcheng rock art is not only the living memory about ancient civilization but also the root of culture in the Central Plains. Here with the help of experts and scholars who care and love rock art, we are going to explore the connotation of grinding base form rock art and the relationship between it and jade Bi. [ABSTRACT FROM AUTHOR]