Although Cao Cao died of illness, there is no record of his illness in the official history. I only know that he died in Luoyang in the first month of AD 220 at the age of 66.

Liu Bei was killed by Wu Dong because of his sworn brother Guan Yu. In grief, he threw all his strength into attacking Wu Dong. As a result, he was defeated by Lu Xun, the general of Wu Dong, in the battle of Yiling, and retired to Yongan. Finally, in April 223, he entrusted Liu Chan to Zhuge Liang at the age of 63. So Cao Cao died before Liu Bei.

Cao Liu s Heroism in Cooking Wine;

Boiling Wine on Heroes is a fragment of China's four classical novels Romance of the Three Kingdoms. It refers to the story that Cao Cao, who was in charge of the imperial court, used a banquet to test Liu Bei's ambition to dominate the world four years ago before the battle of Guandu in Jian 'an, Cao Yuan, and was finally deceived by Liu Bei's clever words.