Is “Killing in a dream and killing Lü Boshe's family” true?
based on fact
The Records of the Three Kingdoms, Book of Wei, Annals of Emperor Wu, Pei's annotation, cites the Miscellaneous Records of Similarities and Differences, which records that the killing of Lü Boshe's family was due to suspicion and mistaken killing; the 'killing in a dream' is fictionalized in the novel to highlight his suspicious nature.
Cao Cao
In official histories, he is an outstanding statesman, military strategist, and writer, while in novels, he is portrayed as a treacherous and cruel usurper.