1. Keep the Streets Clean
2. Keep the City Clean with functional architecture and public transportation
3. Ensuring the Waterways are clean so a thriving ecosystem with high species diversity can exist (I counted no less than 23 aquatic species over a stretch of 400m, which is phenomenal. Water look clean, too, and people were fishing along the canal. Depicted here are 6 species of duckweeds, later I added a 7th.).