This sentence was found by me and a friend at 2 different places, along with colored glowing eggs you could destroy by shooting. The areas CANNOT be accessed without noclip AND godmode, so they probably are easter eggs. Still: What does this mean? Does anyone know?

EDIT: Here's a picture: http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=404371727