白村江戰鬪 이전 倭國의 遣唐使 -唐의 서북방 정세변화를 중심으로-

Abstract

Although Japan was an island nation, it was aware of China's change of situation through the missions of Goguryeo and Baekje. In 623 students who studied in China suggested exchanges with China, but Japanese rulers were indifferent. At that time, China was not an economic or military power. In 626, Dang Tae-jong also bought peace by giving a large fortune to Dongdol-dong. The change came suddenly. In 627 a rebellion broke out against the Dongdol stream, and a number of livestock died in the event of a dzud. In February, 630, the Chinese military defeated the main force of Dongdol, which weakened. Koguryo envoys reported the news to Japan in March, 630. This is why Japan sent its first envoy to China that year In 631, Japanese envoys returned to Japan and Chinese envoys came to Japan with them. But they had an argument with the Japanese king, and the relationship was severed. Twenty-three years later, the Japanese government sent envoys to China twice. On May 26, 649, Tang Tae-jong died. His son, Tang Koajung, had no charisma. Many powerful nations have turned against China. In October of 649, Tibet threatened to invade China, and Asana-Haro completed the reunification of the Western TÜRK. Koguryeo also encroached on the East Mongolia area. Then, China tried to improve the situation by offering cultural benefits to neighboring countries. The Emperor presented Tibet with enormous supplies and engineers. He also donated goods to the Far West countries, Kucha. Japan, which is located behind China's enemy Koguryeo, would also benefit from the Emperor. In April 653, Japan dispatched envoys to China. They returned home with a large collection of documents and treasures from the emperor. In February 654, the Japanese government sent envoys to China again. The Japanese envoy, who met the emperor, received an unexpected letter. As Silla was invaded by Baekje and Goguryeo, a nearby Japanese kingdom was urged to send troops to save. However, Japan ignored the order of the Chinese emperor and maintained a close relationship with Goguryeo and Baekje. The Chinese emperor opened his eyes to hostility toward Japan, and Silla's relationship with Japan was also cooled. ​In December 657, there was a major change in the international situation. The Chinese army defeated the West Turk. Tang Dynasty became the sole superpower again. In April 659, King Silla made a military request to China, and the Chinese emperor decided to dispatch troops to the Korean Peninsula at the end of that year. Later that year, Japanese envoys appeared in the Chinese capital. Immediately after December 3, the Japanese envoys were put in jail on orders from the emperor. They had to prevent the discovery of China's plan to invade Baekje.