Ma-di-gu (the number of poems unknown each having eight lines of five characters): This gu is the gu which lost its characters in the Jingkang incident and less than 20 characters can be read from the Song rubbed copy and interpretation of its poems was given up from the first.
馬薦鼓(5字8行・句数不明)靖康の変で字を失った鼓で、宋拓でも20字に満たず、詩の解釈は当初から断念されている。