What is the theme of diary a madman by luxun?

The theme of "Diary of a Madman" by Lu Xun is the oppressive nature of traditional Chinese society and the individual's struggle against it. The protagonist, a madman, becomes increasingly critical of social conventions, traditions, and values but remains powerless to change or escape them. Through the madman's diary entries, Lu Xun satirizes the social, political, and ideological norms of his time and raises questions about the consequences of suppressing intellectual freedom and independent thought. The theme highlights the dangers of conformity, ignorance, and the abuse of power in a conformist society, urging readers to critically examine social norms and fight against oppressive systems.