The mitchoku was conveyed to the Edo bakufu (Japanese feudal government headed by a shogun) through Ichio OKUBO, an assistant to Kinri (the Imperial Palace) several days later, but it was such a time-sensitive situations when the mitchoku was delivered to Mito earlier than to Edo.
幕府には数日後に禁裏付の大久保一翁を通じて伝えられたが、江戸より水戸に先着することを図っての時期であった。