This is not just a sound of a laser cleaner peeling paint off the surface of a work of art, it is the sound of giving history a future.
Once the surface paint has been removed, the conservator restores the artwork by repainting it in its natural bronze color.
"Artwork restoration is called conservation science because we need to use chemicals and high-tech analysis equipment such as microscopes and X-rays to see the unseen part of an artwork."
At the National Museum of Modern And Contemporary Art in Cheongju, more than 30 conservators restore damaged works to their former glory.
Few people are aware of how art is restored, but the work is vital in order to extend an artwork's life.
During conservation, the restorers analyze the materials and techniques the artist has used to understand the creator's intention.
The museum always tries to interview the artists and keep hold of any research on materials and techniques.
"It is sometimes hard when there isn't much information on the materials and techniques the artist used. But I feel a sense of achievement when I restore the damaged work because it feels like I have extended its life."
"Restoring contemporary art is a painstaking task. ‘Conservator C’s’ day demonstrates how this work is done by showing the restored piece of art along with the analysis process."
Instead of just showing the "before and after" of the restored pieces of art, the exhibition follows the footsteps of a conservator.
The tools and equipment they use and the dilemmas they face are shown to the public, so that people can appreciate the effort that goes into art restoration.
Kim Bo-kyoung, Arirang News, Cheongju.