"Watching Pioneer" jokes share the fortress. That's right. What is it?

In fact, many people know that this stalk originated from a video made by UP. In the video, the fort beeped for a long time, and everyone was at a loss and didn't understand what it meant. Then someone in the video said that either gay or GEY didn't understand the fortress, and then everyone sent a barrage saying that the fortress was right. Don't swear at the fortress to prove that you understand what the fortress says and that you are not gay. Then this stalk became popular.