wò​bēi

lying stele

卧碑 臥碑 wò​bēi
lying stele
(literary) a horizontal stone tablet, specifically one installed in Confucian school halls during the Ming and Qing dynasties inscribed with regulations for students (such as bans on political activity)
reclining stele
a stone tablet or tombstone that is laid horizontally or at a shallow angle rather than standing upright