Especially since the Bunkyu era (1861- 1864), the political situation in Japan grew tense, and the domains began to accumulate a stockpile of rice for emergency, and as a consequence the market became short of rice in spite of its rich harvest.
特に文久年間以後には政情が緊迫するようになると、諸藩が万が一に備えて米を備蓄するようになって豊作でも米が流通しないという事態に陥った。