In the ceremony of Seishichisai, Buddhist mortuary tablets of Juo were enshrined with paper and brush put in front of them to offer an opinion to Tenso (celestial gods), Chifu (gods of Earth and other realms), Myokan (officers of Hell) through the Juo.
生七斎の場においては、十王の位牌を安置し、十王を媒介して天曹・地府・冥官への上表文を奉るための紙と筆が、その位牌の前に供えられた。