Who is the purest man, please sum up his heroic deeds?

Personally, Cao Cao is a hero. At first, Cao Cao had no military power. Facing the crisis of the country, he squandered all his wealth, raised the banner of diligent king, spread the news all over the world, and became the first diligent king. The warlord refused to continue marching, and Cao Cao pursued it alone, and he was defeated. Later, he led troops to be a diligent king, and finally achieved great success. What I admire most about Cao Cao is that he has more power to call himself emperor than anyone at that time. If this prime minister responsibility system continues to be improved rather than destroyed, China will lead the world for a thousand years and enter a modern country, just like Britain now. The Three Kingdoms is a heroic era. Even if there is one third of the world, no foreign enemy can commit crimes against China. Cao Cao is a great hero. (1) Lu Xun commented on Cao Cao-Lu Xun said: "When we talk about Cao Cao, it is easy to think of the Romance of the Three Kingdoms, but also the stage. Cao Cao in history is different from Cao Cao in opera novels. We should return Cao Cao's original historical features. Cao Cao is a very capable man, at least a hero. Although I am not a member of Cao Cao's side, I always admire him anyway. This is Lu Xun's overall evaluation of Cao Cao. Why is Cao Cao a hero? One of the most important points is that he can conform to the historical trend and promote social development. Cao Cao was born in humble background and was despised by the famous teachers in Liu Qing at that time. Yuan Shao publicly called him a "traitor". Cao Cao himself said with regret: "cherish your thin body, lonely and painful." "There are no three immigrants and I have never heard of court language." But he didn't flinch, but resolutely competed with those haozu groups.