If something‘s rotating – go home, you need a break
Parallel or Not ????
Concentrate on the cross in the middle,after a while you will notice that this moving purple dot will turn green.
Best thing last!!!!!
Follow the instruction below.
1) Stare at the 4 little dots on the middle picture for 30 sec.
2) then look at a wall near you
3) a bright spot will appear
4) twinkle a few times and you‘ll see a figure
5) What do you see? Or even WHO do you see?