Its writing style is extremely individualistic: there is no similar book except "Gizan-zassan (Gizan Collection)," compiled by Shangyin LI (courtesy name Yishan), a poet of the late Tang dynasty.
極めて独特な体裁をとり、先行する晩唐の詩人李商隠（字は義山）の編んだ『義山雑纂』に多少の類似が指摘されるほか、類書は見当たらない。