[4]: 288 Chung and some other Non Col members, who became interested in going beyond the Korean Informel movement and its primary mode of painting,[4]: 290 formed another collective the following year: the New Exhibition Group.
"[8] Understanding the potential of this type of performance as a public-friendly form of art that could engage in social commentary, Chung began to organize and produce his own happenings soon after.
[7]: 176 Transparent Balloons and Nude was Chung's first happening organized with artists Kang Kuk-jin and Jung Kang-ja (정강자, 1942–2017), which took place on May 30, 1968, in the famed C'est Si Bon Music Hall in Myeong-dong, Seoul.
Among the fragmented and quickly changing images of Seoul's transforming and modernizing landscape, Chung is featured as a lone urban man, expressing his ennui while walking, yawning, and smoking.
[11]: 57–59 Such works led Chung, as well as Kang and Jung, to consolidate efforts with the artist Kim Ku-lim and others in forming the Korean avant-garde art collective, The Fourth Group (제4집단, Je Sa Jib-Dan).
[7]: 176–177 Although the collective lasted only a few months, their efforts significantly impacted Korean art by spearheading social and institutional critique through joint, body-oriented performances.
[11]: 56–57 Chung became particularly well known for his individual fashion style and long hair during this time, a self-expression that he openly said to be everyday happenings that challenged strict and conservative notions imposed by society.
During the latter performance, Chung read a script he wrote celebrating the aesthetics of long hair, comparing it to one's own life that continued on, no matter how many times it would be cut.
[13] While Chung continued to perform happenings, such as creating chalk drawings in the park in the middle of the night for them to disappear after people walked over them throughout the day, most were not documented.
By tying these materials with string and connecting them to springs, wheels, or magnets, Chung was able to create a kind of kinetic sculpture that would move when prompted by its viewer.