Call for contribution to my historical cryptography website: Cryptiana.
28/02/2025
Chinese Telegraphic Codebook for Phrases (1948)
I got a copy of a Chinese telegraphic codebook (1948) including not only single characters but also phrases. It is Cheng yu Dian ma (成語電碼) already described in 「電碼――中国の文字コード」 (an abridged English version), but I now added three photos.
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