Did Jiang Ziya come from a poor family?

It is no exaggeration to say that the Jiang Ziya in historical records is no less than the mythical version. According to legend, he started his business when he was 60 years old, fishing on the Wei River, and was appreciated by King Wen of Zhou Dynasty. He suddenly became a "bad old man". The Grand Master of the Zhou Dynasty, overseeing military affairs. Sima Qian introduced that Jiang Ziya's ancestors were princes in charge of the "Four Mountains" and had a very prominent position. However, Jiang Ziya was a collateral descendant of the "Four Mountains" and failed to inherit the family's legacy and status, so by his generation he was already a Down and out. Jiang Ziya struggled all his life, and when he was in his seventies, he was still a bad old man who had accomplished nothing.