中日马关议和期间,李鸿章使团与国内至少有102通电报往来。其中数量最多、内容也最重要的与总署之间的往来电报主要使用“密红”密电码,这一密码在官方密码中属最新者,但仍遭日方破译。此外,李鸿章使团使用的密电码还有“电信新法”、“新新法”、“香帅东海密本”、“罗道汉字密本”。其中前两者亦遭破译,后两者可能未遭破译。 During the Sino-Japanese horse government meeting and during the meeting, Li Hongzhang’s delegation telegraphd at least 102 telegrams with China. Among them, the largest and most important part of the incoming and outgoing communications with the Department mainly uses the “secret red” code, which is the latest in the official password but still deciphered by the Japanese party. In addition, the secret code used by Li Hongzhang’s delegation includes the New Law of Telecommunications, the New Law, the Secret of the East China Sea and the Secret of the Luo Chinese Character. The former two have also been deciphered, the latter two may not be deciphered.