Core Viewpoint - The article highlights the innovative modifications made to agricultural machinery in Chongqing's Tongnan District, which significantly enhance farming efficiency in hilly terrains, addressing local farmers' needs and reducing operational costs [4][5]. Group 1: Agricultural Machinery Innovation - The four-in-one rotary tiller, modified by local expert Chen Wei, integrates multiple functions such as tilling, ridging, hole punching, and fertilizing, allowing farmers to avoid purchasing separate machines and improving efficiency [4][5]. - The modified machinery has been successfully utilized in 30,000 acres of cabbage and long white radish fields in Tongnan, leading to a steady stream of orders for the cooperative's equipment [4]. Group 2: Cost Efficiency and Productivity - The original small hand-held tiller could till 5 acres per day at a cost of 200 yuan, while the four-in-one rotary tiller can till 50 acres in a day for 1,000 yuan, effectively reducing costs by about half [4]. - The modifications made to the machinery, such as the addition of a conical feed inlet to prevent clogging, demonstrate a commitment to continuous improvement and adaptation to local agricultural challenges [5]. Group 3: Training and Community Engagement - Chen Wei conducts training sessions for local farmers, teaching them how to maintain and operate the modified machinery effectively, which is crucial for maximizing the benefits of these innovations [4][5]. - The article emphasizes the importance of local expertise in adapting agricultural technology to meet the specific needs of hilly regions, suggesting a collaborative approach between farmers and machinery manufacturers [5].