In March of the third year of Tianxi, how did Kou Zhun take over as Prime Minister?

In March of the third year of Tianxi (10 19), in order to win the favor of Song Zhenzong, both Zhu Neng and the chamberlain knew that Zhou Huaizheng was plotting to forge a "sealed book" and put it on the glycerin mountain in the southwest of Chang 'an. At that time, Kou Zhun had been transferred to this place as the commander of Yongxing Army. Song Zhenzong wanted the so-called "gobbledygook" very much, but some ministers said it was absurd and repeatedly discouraged it. When Zhenzong asked Wang Dan, Wang Dan said, "It was Kou Zhun who didn't believe in gobbledygook. Now that the book of heaven comes to the world, it will be presented to Kou Zhun to serve the government and the people. " So Zhenzong ordered Zhou Huaizheng to talk to Kou Zhun. Kou Zhun didn't want to do this ridiculous thing at first, but Kou Zhun didn't want to do it because of her son-in-law Wang Shu's encouragement. At that time, one of the students, in view of the small population in the DPRK, was quite sinister, while Kou Zhun was too straightforward, and disaster was inevitable in the future, so he offered a plan and said, "You pretended to be ill halfway and wrote a letter, insisting on becoming a foreign official. This is the best policy; If you immediately expose the falsehood of the gobbledygook at the sight of the emperor, you can save your lifelong reputation, which is the middle policy; If you enter the book of heaven and become the prime minister, it is the best policy. " Kou Zhun is rich and famous, and he doesn't listen to his students' advice. Song Zhenzong saw that Kou Zhun presented a "sealed book" and was naturally overjoyed. He personally welcomed him into the forbidden area. In the third year of Tianxi (10 19), in June, Wang Qinruo was exempted from punishment, and Kou Zhun took over as prime minister and concurrently served as the official department minister.