Before the middle of the Ming Dynasty, according to North Korea's "Dragonfly and Song of the Emperor", "there was a jurchen named Wen Jia". According to historical records, Wen Jia was the surname of Jurchen in Jin and Yuan Dynasties, and also the homonym of Jia Gu's surname. Oracle bone is a larger surname of Jurchen Terran in Jin Dynasty. There are more than a dozen people named Jia Gu in Biography of the Golden History. Such as: "Oracle bone Chen Qing's real name is Abu Sha, and Huli diverted to celebrate. Strong and dignified, good at riding and shooting. After eight years of imperial rule, the ancestors sailed to Meng' an. " "Jia Guheng, whose real name is Arribet, has gained great benefits in Shandong West Road. In the thirteenth year of Dading, a female scholar was created, and the fourth person made up for Professor Dongping Fu. Regarding Jia Gu's family, The Book of Jin Shi Guoyu is annotated as Jia Gu Le Tong. Tong, Tong and Tong are homonyms in Chinese characters, all of which are Oracle surnames, which evolved into surnames in Korean historical materials. Historically, this surname has been used by the Qing Taizu Nurhachi and his predecessors, and it has also been recorded in historical materials, such as "Yilan Doumanjia Wenmengge Timur, Tongfancha, Tongjiaochang, Tongtashi and Tongnurhachi". From the above, we can see that today's descendants of the Jurchen in Jianzhou, Tong, Tong's surname and Han's surname, are all Jurchen Oracle surnames from the Jin Dynasty.