As sweltering August nights draw crowds of residents seeking relief along the banks of the Han River, the Seoul Metropolitan Government is attempting to transform a seasonal pastime into a civic exercise in environmental stewardship. Beginning Friday, the city will introduce a series of interactive sustainability challenges tied to Han River Bamping— a portmanteau of "bam," the Korean word for night, and camping — a popular late-summer evening riverside event. Running every weekend through Aug. 30 across major riverfront destinations like Yeouido and Ttukseom parks, the initiative rewards parkgoers with environmental points — known locally as Eco-Miles — for carrying out simple ecological acts, from picking up trash to reusing food containers. The municipal push reflects growing concern over the rise of single-use plastic, food containers and litter that regularly engulfs public waterfronts during peak summer picnic season. By embedding game-like eco-friendly tasks directly into the river’s evening recreational culture, Seoul officials said they hope to incentivize waste redu