This is a fragment from a catalogue of items that were requested to be brought back from China, which were presented to Mt. Hiei-zan by Saicho in 811, and named so because of the characters found on the first line.
最澄が唐からの請来品を弘仁2年（811年）比叡山に奉納した目録の断片で、その初行の文字によってこの名がある。