There is a poem by Hu Zhongzao, a bachelor of Hanlin, which says, "A heart is turbid and clear". When Qianlong saw it, he was furious: "What's the purpose of adding the word' turbid' to the word' clear'?" Hu Zhongzao was killed because of the word "turbidity", which is a sense of guilt for his teachers and friends. There was a man named Xu Shukui who wrote a collection of poems called One Pillar Building, in which the phrase "Ming Dynasty was at its zenith, and I went to Beijing in one fell swoop" was defined by Emperor Qianlong as "great rebellion" on the grounds that "morning and night" was read as "dynasty" and "I want to prosper the Ming Dynasty and go to my own dynasty". As a result, not only the dead Xu Shukui and his son were slaughtered, but also Xu's grandson and the proofreader were all executed.