The demobilized soldier Ai Chengchuan and Li Hua are determined to change the impoverished appearance of their hometown. They returned home to start businesses and venture into the market. They underwent hardships and tribulations, starting by taking on air conditioning installation jobs and gradually developing to the research and production of lithium bromide central air conditioning, achieving success in their careers while also blossoming in love. Li Yingcai, concerned about his fellow townspeople, resigned from his official position to return home and become the village party secretary. He led the villagers in setting up factories, learning from failures, accumulating experience, and eventually succeeding in winning bids for car bumper contracts. My farmer brothers.