Why did da ji help Zhou Wang assassinate Jiang Ziya at the last minute?

Da ji was puzzled by orders from Nu Wa, and only then did he shoulder the heavy responsibility of helping Zhou cut Zhou. Jiang Ziya is going to attack. From this point of view, da ji and Jiang Ziya belong to friendly forces, but why did da ji kill Jiang Ziya? Personally, I think there are two reasons.

First, da ji and Jiang Ziya didn't know that they had the same task. Because of her blasphemy, Nu Wa asked da ji to help Zhou cut down and let her perish. Jiang Ziya, on the other hand, was ordained by the Buddha since the early Yuan Dynasty. In addition to helping Zhou cut Zhou, he also shouldered the order of sealing the gods. Therefore, the direct leadership of two people is different, so I don't know that there are the same people to perform the same tasks, so I naturally regard each other as enemies.

The second reason is that Jiang Ziya killed da ji's jade pipa sister. Jiang Ziya got the order and began to hibernate on earth. One day, Jiang Ziya used his magic to collect five imps to help the Song barbarians build houses safely. Since then, I have used this skill to open a fortune-telling restaurant. But what people didn't expect was that after eating people in the palace, the jade pipa essence got into Jiang Ziya after passing through Jiang Ziya's life gate. The final result is self-evident. Jiang Ziya saw its monster body and was killed by An Yan. At the same time, in order not to be confused by others, he took the broken jade pipa essence to Zhou Wang's eyes and showed the essence of pipa essence with fire.

Da ji was very angry. As her good sister, she was not only killed, but also humiliated after her death, so she blamed all this on Jiang Ziya. In order to kill Jiang Ziya, he persecuted Jiang Ziya under the pretext of building a deer platform. Fortunately, da ji's move did not have a bad influence on their task, and finally it was successfully completed.