Best I can read as a Chinese person without a lick of Japanese for that artist commentary is:

_______ fleet, large mouth approaching (or approaching large opening/mouth/passage), alert (or "watch out for ____"

It's referring to the new formation included on this event. The wiki lists it as "vanguard formation". Others humorously call it the "mushroom/penis formation".

Spoon Formation saves lives.

You have no idea how good this formation is. The evasion rate is really nice when dealing with all those night battle nodes.