In the thousands of years of ancient Chinese history, dynasties have been constantly changing, and whenever people in the chaotic world have begun to migrate in order to escape the chaos of war, the route in China is basically from the north to the south, and some directly migrate overseas. Some went to the Korean Peninsula, some went to Vietnam, and some even crossed the ocean to Japan. The descendants of Liu Bang crossed the sea 1700 years ago, and after 1700, a group of Japanese nobles came to China to recognize their ancestors.
This matter also has to start from the Three Kingdoms era, Cao Pi destroyed the Han emperor, did not kill the Han Xiandi, but named the Han Xiandi as the Duke of Shanyang, the Han Xiandi because he was a Zen Rang, not a vassal of Cao Pi, living in his own Shanyang Principality. However, he died not long after, and many people believe that Cao Pi sent someone to kill him, and the real cause of his death was left alone. After the death of Emperor Xian of Han, his grandson Liu Kang succeeded to the throne of Shanyang and continued to live in his own small principality.
Later, the Principality of Shanyang was passed down for 4 generations, coexisting for 89 years, and by the time of Liu Qiu, the fourth generation of the Duke of Shanyang, because Liu Qiu was aggressive, he was destroyed by the Wuhu Chaohua at this time. The people of the Liu clan belonged to Liu Qiu's contemporaries, Liu Azhi's subordinates. At that time, the Central Plains were in chaos and constantly in war, so Liu Azhi felt that if he continued to stay in the Central Plains, he would inevitably be destroyed by the whole clan. Therefore, one day he gathered the descendants of Emperor Xian of Han, "I heard that the country of Wunu is relatively stable, and in order to avoid disasters, I am ready to cross the east with my clan." Under the circumstances, the war was brutal, and the tribesmen had no opinion on this.
Therefore, in May 289 AD, under the leadership of Liu Azhi, 2,040 descendants of the Liu clan followed Xu Fu's practice and crossed the ocean to Japan under the pretext of going to the sea to seek immortality. Japanese historical records record that after Liu Azhi arrived in Japan, the Japanese Emperor gave him the title of envoy of the Eastern Han Dynasty and arranged to live in Takashi-gun, where he still commemorates his actions. At that time, most of the descendants of this huge Liu surname were people who mastered the advanced civilization and technology of the Central Plains, and Japan at that time was a barbaric region, and the emperor was very admiring of the Great Han.
As a result, Liu Azhi became the most respected person in Japan and gradually became an emerging aristocratic group in Japan. After Liu Azhi's death, his son Liu Duhe was given the surname Zhi by Emperor Xiongluo and was given the title of King of Duhe, and the emperor made him specializing in writing and craftsmanship. Since then, China's ancient civilization, Confucianism, as well as water conservancy, irrigation, silkworm farming and other agricultural technologies, construction, carving, weaving, metallurgy, pottery and other craft technology have been introduced to Japan in large quantities, accelerating the evolution of Japan.
Later, Liu Azhi's descendants were given the aristocratic surnames of Daizo, Sakaue, etc., and began to marry the emperor, and the famous Japanese female emperor Emperor Jitian married Liu Azhi's great-grandson, and also gave birth to three sons of Sakagami, Dazang, and Uchizo, from which it can also be seen that Sakagami and Ōzona are imperial surnames. Moreover, his 45th generation descendant, Ōzo Harushi, also became the Japanese general of the Western Expedition and put an end to the "Tianqing Rebellion" for Japan. For this reason, he was also given the imperial coat of arms and military mate, and since then, the Ōzo family has long occupied prominent positions such as Nagato Shou and Dazai Daisuke in Japan.
Moreover, there are more and more aristocratic surnames, such as the aristocratic surname Danbo who is in charge of medicine, that is, the descendant of Liu Azhi, who has controlled Japanese medical treatment for more than 1,000 years, until now his descendant Danbo Yuanjian has clearly declared himself to be a descendant of Liu Xie, the Emperor of Han Xian, in the preface to a book, and the Han name is Liu Baoting. Another example is the aristocratic surname Harada, the Harada family has been passed down to the 93rd generation of Liu Bang, and there is also the Han Taigong Temple in Fukuoka, where it is concentrated, and the family tree since Liu Bang has been preserved, which shows the status of Liu Bang's descendants in Japan.
In the Japanese history book "Introduction to Japanese History", He made a lofty evaluation of the changes brought about by Liu Azhi Dongdu to Japanese civilization and social progress, and had an epoch-making impact on Japanese culture. In terms of spiritual culture, the introduction of Kanji, Han Chinese, and Confucianism and Buddhism determined the nature of later Japanese culture. Moreover, a large number of processes were introduced, which directly accelerated the development of Japan. After 1700, many descendants of Liu Bang of Japan came to China to recognize their ancestors, typical of the famous Harada family in 1988 who came to China to sacrifice the tombs of their ancestors Liu Bang and Liu Che, which was very grand.