Group 1 - The article highlights the historical significance and cultural heritage of the Yellow River and its impact on the local community in Lijin, which has a history of over 800 years [1][3] - It discusses the evolution of flood control measures in Lijin, detailing the transition from straw dams to stone dams, enhancing flood resistance capabilities over the decades [1][2] - The innovative "Xihua Sew" method developed by locals for constructing flood control structures is noted for its effectiveness and aesthetic appeal, which has been widely adopted [2] Group 2 - The author emphasizes the importance of documenting and preserving the cultural and historical narratives associated with the Yellow River through literature, contributing to the promotion of Yellow River culture [2][3]