Why does da ji have to let Bigan die?

On the birthday of Shang Zhouwang's Nu Wa Empress, she went to Nu Wa Palace to burn incense. Because she was greedy for the beauty of Nu Wa Empress, she wrote a beautiful poem on the wall and blasphemed Nu Wa Empress. Nu Wa Niangniang came back from going out and saw the poems on the wall. She was furious and decided to go to Chao Ge to get rid of Zhou Wang herself. On the way, Nuwa was blocked by two red lights from the heads of Zhou Wang's sons, Yin Jiao and Yin Hong. Nu Wa Niangniang still has twenty-eight years of luck in Zhou Wang, but as a saint, Nu Wa Niangniang can't swallow this tone, so she uses her status as the originator of all kinds of demons to summon the three demons of Xuanyuan Tomb, the Millennium Fox, the nine-headed pheasant essence and the jade pipa essence to incarnate beauty, so that she can confuse your heart in the palace, let the Shang Dynasty disintegrate from the inside, and then cooperate with King Wu to overthrow Zhou Wang's rule.

Three demons were ordered to break into Zhou Wang Palace, and da ji, a thousand-year-old fox, was deeply loved by Zhou Wang. Before the three demons entered the palace, although Nu Wa had promised not to hurt Zhongliang, after investigation, da ji and other three demons came to the conclusion that it was impossible to shake the foundation of Shang Dynasty simply by confusing Zhou Wang with beauty. Because there are many loyal ministers and good generals under Zhou Wang, the article has business ability and comparison; Wu Wenzhong and Wu Cheng were escorted by Wang Huang.

The third devil disobeyed Nu Wa's orders and decided to go it alone. By destroying Zhong Liang, they ruined the national luck of the Shang Dynasty, and a large number of innocent ministers died at the hands of the Three Demons. Bigan is a figure that da ji must get rid of, because only by getting rid of Bigan can the Shang Dynasty disintegrate and accomplish the task given by Nuwa. On the other hand, Beagan has a personal grudge against da ji. In Lutai, Bi Gan saw through the truth that there were many foxes pretending to be immortals drinking and singing and dancing in Xuanyuan tomb, so Bi Gan told the truth to Wu Cheng Wang Huang. Huang ordered people to follow foxes and found their lair Xuanyuan Tomb, so Huang ordered people to set fire to all foxes in da ji's family.

Bigan ordered a fur coat made of fox skin to be given to Zhou Wang, so da ji hated Bigan's guts and wanted to kill him. However, it is not easy to hurt him, because it is more important than being in a high position. Da ji and Hu staged an illusion that da ji pretended that angina was dying, and then Hu put on an act, snapping his fingers and counting. In order to save da ji, she will take away seven exquisite hearts, and only Abigail has seven exquisite hearts.

In order to save da ji, Zhou Wang gave his life. Bigan cut his heart with grief and indignation. Although Bigan took Jiang Ziya's water ahead of schedule, it was only a stopgap measure. Bigan finally failed to escape from da ji's clutches.