In the course of history, the contact between China and Japan was few before the period of Three Kingdoms and Cao Wei, but after which was more. An important evidence for it was that Chen Shou wrote "The History of the Three Kingdoms" for the Japanese "Biography". The biography recorded the route and the mileage from China to Japan, the structure, products and the legal system of the Queen country, the clothes and ornaments, the hair style , the marriage and the funeral custom of Japan and also recorded six contact between Japanese queen and the envoys of Cao Wei and their presents and awards. Though some records in "Japanese Biography" needed verifying and differentiating, they were still the precious materials for the study of Sino-Japanese relations in early times. The "Japanese Biography" drew materials generally from "Wei Shu" by Wang Shen and "Wei Lui" by Yu Huan. The former was officially published and had plentiful official materials, which was from two "Reports" of the Cao Wei envoys to Japan and from the Japanese envoys to China.