Is “Predicted Zhuge Liang's route and defended Chencang” true?
attested in history
The Records of the Three Kingdoms, Book of Wei, Biography of Cao Zhen records that Cao Zhen predicted Zhuge Liang would definitely attack Chencang, and sent Hao Zhao to build defenses, successfully resisting Zhuge Liang's second Northern Expedition. (Original text: 「三郡皆平。真以亮惩于祁山，后出必从陈仓，乃使将军郝昭、王生守陈仓，治其城。明年春，亮果围陈仓，已有备而不能克。」——Source: data/raw/sanguozhi/魏书·诸夏侯曹传.txt)
Cao Zhen
In official history, he was a Grand Marshal of Wei who skillfully commanded troops and repeatedly defeated Shu forces, but in the novel he is reduced to a foil who is infuriated to death.
Other claims about Cao Zhen
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