What is the ideological connotation of Lu Xun's novel Regret for the Past?

Regret for the Past is a short story written by Lu Xun on 1925 with the theme of love, which reflects the fate of intellectuals during the May 4th Movement. Through a pair of young intellectuals who woke up in the May 4th Youth Movement, the author bravely broke through the shackles of feudal ethics, starting with love and staying together, and ending with a love tragedy of "injury" and "death", keenly and profoundly revealing a rich theme: if young people only limit their struggle to the narrow scope of personal pursuit and marital autonomy, it is difficult to break through the dungeon of feudal society by their own weak strength, and it is even more difficult to get the final result.

Through Juansheng's handwriting, the novel tells the love tragedy between him and Zijun in a personal tone, shows the complex psychological state of the characters and restores the tragic situation of young couples in feudal society. The changes of Zijun and Juansheng's image to physiology profoundly revealed the weakness of personal strength in the feudal society that ate people. The author hopes to awaken the cohesion of the national youth against feudal society.