On February 9, an event was held at a cafe in Seoul to promote the singer's 20th-anniversary project '4 Flavors'. The singer commented, "I am such a lucky person. I had a lot of complaints while I was performing when I was younger. Thinking back now, I feel like it was luck to me." She continued, "There aren't many singers who become popular from ad songs; however, it was different back then."
Park Hye Kyung mentioned, "Out of my entire song collection, 38 of them were featured in advertisements." Her new song "Nerd Girl" featureing Long: D was released recently.