Three Kingdoms' Real Villain Was the Smartest Man in the Room

Cao Cao is the villain of the most famous story in Chinese history. He was also right about almost everything. The best general, the best administrator, and one of the era's top three poets — cast as a snake by a novelist 1,200 years after his death. How does the most effective ruler of the Three Kingdoms era become the historical bad guy — and why did the verdict stick for eight centuries? Because a 14th-century novelist needed a villain so Liu Bei could be a hero.