Relief sculpture may also decorate steles, upright slabs, usually of stone, often also containing inscriptions. There are several steles and wall inscriptions in Byzantine Greek language in the theatre. Two steles inside, usually bearing the names of the pharaoh, are missing inscriptions. Three steles with inscriptions found at Kaifeng bear some historical suggestions. His works evoke prehistory, ancient stone steles and romanesque figures. Erecting steles at tombs or temples eventually became a widespread social and religious phenomenon. The inscriptions on the steles are in four languages&colon; Chinese, Jurchen, Mongol, and Tibetan. He became the Imperial Calligrapher and inscribed several major imperial steles. It also holds ink rubbings from Ming-era steles originally located by a synagogue in Kaifeng. Stone artefacts, columns, steles, and column capitals are exhibited in the museum yard. The southern row consists of eight pavilions, housing smaller steles, several in each. Stone steles record repairs to the mosque and feature calligraphic works. Ink rubbings of the steles are available for sale. Its most important steles and grave goods are preserved in the Romano-Germanic Museum. The earthquake damaged many of the Forest of Stone steles badly.