The 'Green Card' campaign was founded in July 2011 by the Ministry of Environment to support green living by Koreans. It's a card that gives incentives when using public transportation, decreasing energy usage, or buying items from an environmentally friendly company.
Her label said, "After she was chosen as the model, she put a lot of thought in it. Since it's a public service campaign, she prepared by thinking about how well she had to show the message to the people. It's important to look nice, but she also wanted to help people get interested in the Green Card."