Is it true that the red cliff was burned? Some people say that Cao Cao's army died of plague. Can there be a historical basis? Some people say that there were no sailboats at all during the Three King

Is it true that the red cliff was burned? Some people say that Cao Cao's army died of plague. Can there be a historical basis? Some people say that there were no sailboats at all during the Three Kingdoms period, which is false. It is said that Cao Cao's army died of the plague. Zhuge Liang said in The Three Kingdoms that Cao Cao's army was a spent force. Some people say that Zhuge Liang thinks that Wu Dong treats Cao Cao earlier and earlier; It is also said that Cao Cao's soldiers are all northerners, and the plague caused by the acclimatization in the south has dealt a great blow to Cao Jun. I think the latter is more credible. The earliest wooden sailboats originated in ancient Egypt. About 4700 years ago, wooden sailboats sailed in the Nile and the Mediterranean. Sailing appeared in China at least two thousand years later than in the west, and the balanced longitudinal sail appeared in the Eastern Han Dynasty. So there were sailboats in the Three Kingdoms period.