Jiang Ziya supported Zhou Wenwang's attack, why was it destroyed after death?

Jiang Ziya was not destroyed after his death. After he helped Zhou Wenwang cut Qi, he was sealed in Qi and became the ancestor of Qi. After Jiang Ziya's death, his son became the monarch of Qi, and later generations even developed Qi to the peak and became one of the five tyrants in the Spring and Autumn Period. His extinction after his death is purely a rumor.

Jiang Ziya can be said to be a clever man. With the help of fishing, he caught it, then gained recognition, helped Zhou Wuwang to cut the Zhou Dynasty, and finally established the Zhou Dynasty.

When Jiang Ziya assisted King Wen, he was indeed more famous than the emperor. When the great cause is not completed, Zhou Wuwang can rely on him and trust him, but once the great cause is completed, those fame will become a knife on Jiang Ziya's head.

However, although Jiang Ziya's fame is higher than that of the emperor, in fact, the emperor did not do as Jiang Ziya did. First of all, there is nothing wrong with Jiang Ziya. If the emperor does this, it will cause panic among other heroes. Secondly, the initial Zhou Dynasty was unstable and needed Jiang Ziya's assistance, so when he was needed, he would definitely not do harm by force.