2. Both of them belong to Koguryo branch, with the same written language and almost the same living habits.
3. The surname Jin ranks sixty-ninth in China and ninety-second in Taiwan Province Province. From the hands of the ancient five emperors, the real name is Zhi, also known as Qingyang. After his death, he was honored as Xidi. In the five elements study, the west belongs to gold, so it is also called gold, and its son and grandson take gold as their surname. Evolution: During the Western Han Dynasty, Xiongnu King Xiuzai surrendered to the Han Dynasty with evil Kun Wang. He deliberately cast a golden man to worship heaven, and Emperor Wu of the Han Dynasty gave him the surname Jin, and his descendants took Jin as their surname. Emperor Gaozu named Xiang Bo Liu. In the Five Dynasties, in order to avoid the disrespectful name Qian □ (Liu He □ sounds the same), his descendants went to Liu's character and the base of the knife, which is the name of Jin. During the Sixteen Kingdoms period, the Qiang chieftain in the former Qin Dynasty was Jin, and later generations were all surnamed Jin. In the Qing Dynasty, many people took the Han surname "Jin" as their surname.
Han people should have many Jin surnames.