Why when I saw this picture, it turned clockwise first, and then turned counterclockwise when I looked at it again.

There are both positive and counterclockwise directions. As long as you look at it for a while, shift your gaze, take a break to think, and then look again, it will change. The reason should be that the angle when you first looked at it gave you a thought. Set the pattern, and then look again. It happens to be not from the angle you just looked at, and it gives you another mindset. As long as you keep watching it turn without changing your eyes, then she will turn in one direction, haha