What happened when Wang Anshi saved Dongpo in one sentence?

Su Dongpo and Wang Anshi were officials of the same dynasty. Because of different political views and opinions, they gradually alienated. Finally, in Wang Anshi's later years, they had differences in their respective political views. Every time Wang Anshi carried out political reform, Su Dongpo wrote satirical poems, which made Wang Anshi very angry and offended many ministers in the DPRK.

In the early years of Yuanfeng, people who hated Su Dongpo seized the fact that he wrote poems mocking the court and played one for him. When Zongshen saw it, he was very angry. He sent someone to arrest Su Dongpo and put him in prison. Su Dongpo knows very well that he ran away this time and will die.

Besides, Wang Anshi lived in seclusion in the mountains after the strike, so he didn't know the news that Su Dongpo was imprisoned. When the Wutai Poetry Case, which caused a sensation in the imperial court, arrived in Jiangning, Su Dongpo was convicted. Thinking of how difficult the country is and how scarce talents are, Wang Anshi wrote a letter overnight and sent a flying horse to Beijing to give the emperor Zongshen. The letter said, which country is employing people, but it kills a learned scholar for the trouble caused by some trivial matters?

Song Shenzong was a successful emperor who used Wang Anshi as prime minister to carry out political reform. Although Wang Anshi has already retired, Zongshen still respects him very much. Zong Shen read the letter, thought and thought, and found it very reasonable. He ordered Su Dongpo to be released and demoted to a remote place to be a small official. Since then, "Wang Anshi saved Dongpo with one word" has become a beautiful talk of "literati dating" in history.