Which nationality is Yue Fei's resistance to gold? The teacher said it was Mongolian. Some people say it's a jurchen. why

In fact, the regime established by Jin for the Jurchen nationality once posed a great threat to the Song Dynasty, and was later destroyed by the rising Mongols. The Mongols established political power, which was later the Yuan Dynasty. Therefore, Jin is actually a Jurchen nationality. I hope I can help you and wish you happiness.