On Saturday, June 10, 2017, IFEZ held the “Cheongna International City Good Market Flea Market” at Central Lake Park in Cheongna International City. The event was organized as a citizen-participatory market to promote resource reuse and a culture of sharing. At the venue, secondhand goods were sold and exchanged, and family-oriented experience programs were offered, allowing local residents to share the value of eco-friendly consumption and resource circulation in everyday life.