According to a theory, these coins were stored underground to ward off evil spirits, as a charm or for avoiding the disturbance of war, but according to another theory, they were stored to prevent them from being exchanged with low-quality coins.
これらは魔除けやまじない、戦乱を避けて蓄蔵したとの解釈もあるが、悪貨への交換を避けるため良貨を保管したとの見方もある。