The video captures the process of grinding rapeseed cake using a specialized machine, a crucial step in oil extraction. The rapeseed cake, a byproduct of initial pressing, is fed into the grinder where it is finely milled, preparing it for further processing. This machinery is designed to efficiently break down the rapeseed cake, enhancing the yield of oil in subsequent extraction phases. The operation of the grinder is a testament to the advancements in agricultural processing, where machines optimize the extraction process, ensuring maximum oil recovery from each batch of seeds. It underscores the importance of precise equipment in the production of edible oils, where every step, from grinding to pressing, contributes to the quality and quantity of the final product. This scene is a practical demonstration of how modern technology is applied in traditional oil extraction methods to improve efficiency and output.