A Tongil is being assembled on the right, with the rear to the camera. Another one is further behind and there are probably two KT8D5 on the left.
source: naenara.com.kp
A newer photo in 2021-1-28 shows 3 Tongil that are not yet in service: http://arirangmeari.com/contents/news/20...ge1.jpg
A photo in 2021-3-15 shows 4 Tongil that have not been painted: http://arirangmeari.com/index.php?t=news&no=16323