How does The Romance of the Three Kingdoms reflect the ideological tendency of "supporting Liu and opposing Cao"? How to understand this tendency? Need for the exam! ! ! thank you

There are many facts supporting Liu's anti-Cao in the original work, which can be used for reference upstairs. This is a more concrete example. For example, the description of the battle of Guandu is not long, but it uses a lot of words to describe Liu Bei and Wu's resistance to Cao Cao's fire attack on Chibi, and every time Cao Cao loses, he writes happily. On the whole, a great deal of space is devoted to Liu Bei and Shu, especially after Shu's demise, which ended in a few periods, but in fact, according to Yang Hucheng and Du Yu, there are many contents.

My personal understanding of this tendency is still influenced by the "hereditary" thought in feudal society at that time. Liu Bang, the founder of the Han Dynasty, established the foundation of the Han Dynasty for hundreds of years, and the people rarely enjoyed living and working in peace and contentment. Later, the warlords were independent, and the warlords headed by Liu had inherent advantages. Liu Zhang, Liu Biao, Ada and Liu Bei are all Han relatives. Long-term feudal thought has solidified people's thinking that the emperors of the Han Dynasty should be called Liu, Liu Zhang and Liu Biao. But still rely on prestige to gather a lot of talents, especially uncle Liu Bei, who is humble and ambitious, and is also the great-grandson of Emperor Han Jing. Naturally, many heroes like Guan Yu, Zhang Fei, Zhuge Liang and Pang Tong gathered at that time. Most of these people also value the origin of Liu Bei's Zhou emperor, which can be described as a red seedling. However, Cao Cao's background is not so good. Even if he is loyal and powerful, he will be angered. However, the author of Romance of the Three Kingdoms still did not get rid of the shackles of feudal thought at that time, and naturally had a tendency to favor Liu Bei. Of course, there are also some protagonists whose personality charm plays a role in the story. My humble opinion, please correct me.