Western scholars put forward a view that the ancient Ryukyu people are of the same origin as the aborigines in Indonesia or Australia and belong to the Malay branch. Japanese scholars believe that Ryukyu people are of the same origin as Ainu people and Yamato people.
There is also a saying that Ryukyu people moved in from the Japanese archipelago and became a branch of the Japanese. This statement is called "Japan Ryukyu Homology". The Story of Ryukyu in Zhenxi written by Japanese monks and another Japanese novel with a Bow written by Qu Qin both mentioned the story that Nishihara fled to Ryukyu and went to North Korea after the Baoyuan Rebellion. Sun Yat-sen's World Guide, compiled by Prince Regent Xiang Xian of Ryukyu, also claims that King Shuntian of Ryukyu is the son of Yuan Chao born in Ryukyu. Since then, Zhongshan Genealogy has been translated from Zhongshan Shi Jian, which has been used ever since. Due to the positioning of Sun Yat-sen as an official history book, the theory of Japan and Ryukyu ancestors was accepted by many Japanese and some Ryukyu people. Some famous Ryukyu people, such as Xiang Xiangxian, Xiang Youheng and Yi Popo. They are all supporters of the same ancestor theory of Japan and Ryukyu. However, the story of Japan's Baoyuan did not mention that Ryukyu originated in Korea, and when Shi Jian in Zhongshan was compiled, Ryukyu had become a vassal state of Satsuma in Japan, so some people thought it was a fabrication. Tao, a Chinese scholar, is also a famous opponent of the same clan theory between Japan and Ryukyu, calling it "really hateful" that Ryukyu raped a fairy and forged the Japanese as the father of King Shuntian.
In the Edo period, it was said that "Japan and Ryukyu are the same clan", and Ryukyu people were also one of the "Japanese" mentioned in China's ancient books. This statement was put forward by Noi Baishi in 17 19. In the preface of Nan Dao Chronicle, it is considered that Nanwo mentioned in Shan Hai Jing and Overseas Stories is Ryukyu, and it is proved by some Ryukyu ballads and old sayings. In the book Koukou Law written by 178 1, Fujimori even thinks that Tian Sunyue (クマヤー Cave) on Ye Huiping Island in Ryukyu is the "place where Tiansun arrived" in Japanese mythology, and Emperor Jimmu set out from this island for the eastward expedition. This statement was immediately questioned by other scholars after its birth. This giant director refuted this statement in his book The Clamp Madman (1785).