This is news from the past hour.
Back in 2010, a similar lie was reported: https://www.voltairenet.org/article167599.html
According to western MSM DPRK has supposedly fired 200 rounds of artillery shells at a South Korean island (it was west of not at) and in response to SK planning to do the same thing and conducting live fire drills.
KCNA article from before this was reported: https://kcnawatch.org/newstream/1704456345-947024580/confrontation-maniacs-will-suffer-most-painful-moments-kcna-commentary/
On Jan. 2, almost all units of the puppet army were mobilized in the shelling drill and maneuvers of motorized troops in the frontline area. The next day, the puppet navy conducted naval bombardment and naval maneuvers in the whole waters of the East, West and South Seas.
I hope they can find new jobs quickly