A dance lesson, but no sign of any students.
The aerobic dance instructor sets up her phone instead.
"Today we are going to learn some simple stretching and fun dance moves to fight the coronavirus."
As community centers have closed due to the coronavirus outbreak, instructors have voluntarily offered to give free lessons and have been posting videos on online messaging apps and Youtube for students to follow.
"In a bid to help the elderly relieve their boredom and depression, Seocho-gu District has decided to take care of local residents' mental health. We have prepared a range of programs for 'psychological quarantine' and try to stay connected with all the residents."
Most people have lost their daily routines and feel trapped and isolated at home.
Mr. Yoon is one of those senior citizens looking for things to do indoors and says he is making use of the videos posted by the district.
"Old people have no places to go as events are postponed and facilities are closed. In other words, it's like a jail without bars. Because we stay home all the time, our muscles get weaker. So this kind of video really helps."
"Seocho-gu District has also been offering plants and beansprout seeds for the elderly and those in low-income brackets to raise so that they can keep themselves occupied until public facilities reopen."
Social welfare centers prepare beansprout kits and deliver them to people's doors.
This helps people better manage their anxiety and restore their calm.
"Seeing the numbers rise every day, I stay at home. But it's stuffy and boring. I think it will be fun raising these little beansprouts."
The center will provide one thousand plants to those in low-income groups and elderly people living alone.
Choi Jeong-yoon, Arirang News.