As for the ideographs themselves, they must have been long familiar, though doubtless to a very limited circle. Chinese history affords conclusive evidence. Thus, in the records of the later Han (A.D. 25-220) we read that from the time when Wu-Ti (140-86 B.C.) overthrew Korea, the Japanese of thirty-two provinces communicated with the Chinese authorities in the peninsula by means of a postal service. The Wei annals (A.D. 220-265) state that in A.D. 238, the Chinese sovereign sent a written reply to a communication from the "Queen of Japan"--Jingo was then on the throne. In the same year, the Japanese Court addressed a written answer to a Chinese rescript forwarded to Yamato by the governor of Thepang--the modern Namwon in Chollado--and in A.D. 247, a despatch was sent by the Chinese authorities admonishing the Japanese to desist from internecine quarrels. These references indicate that the use of the ideographs was known in Japan long before the reign of Ojin, whether we take the Japanese or the corrected date for the latter. It will probably be just to assume, however, that the study of the ideographs had scarcely any vogue in Japan until the coming of Atogi and Wani, nor does it appear to have attracted much attention outside Court circles even subsequently to that date, for the records show that, in the reign of the Emperor Bidatsu (A.D. 572-585), a memorial sent by Korea to the Yamato Court was illegible to all the officials except one man, by name Wang-sin-i, who seems to have been a descendant of the Paikche emigrant, Wan-i.