The struggle between Wu Sunfu and Zhao Botao in the public bond market, the struggle between Wu Sunfu and the farmers in Shuangqiao Town, the struggle between Wu Sunfu and the workers of Yuhua Silk Factory, etc.

1. The struggle between Wu Sunfu and Zhao Botao in the public bond market: In "Midnight", Zhao Botao is a greedy businessman, and Wu Sunfu, as an upright financier, competes with him in the public bond market. started the struggle and exposed Zhao Botao's deception and illegal behavior.

2. Wu Sunfu’s struggle with the farmers in Shuangqiao Town: Shuangqiao Town was Wu Sunfu’s hometown. After he returned to his hometown, he found that the farmers were oppressed and exploited by the landlords. He actively helped the farmers fight for rights, fight against landlords, and fight for the interests and rights of farmers.

3. Wu Sunfu’s struggle with the workers of Yuhua Silk Factory: While working at Yuhua Silk Factory, Wu Sunfu discovered that workers were oppressed due to low wages, poor working conditions and unfair treatment. , he actively organized workers to fight and fought for reasonable treatment and rights for workers.