One day, my aunt carried me on her back to the hospital since I needed a check-up and to change the bandages. I noticed the wounded high school kids in the hospital, a lot of youngsters died during the Cultural Revolution. I guess I did not notice when I came the first time because of my own wound. On the way back, we were caught in a brief summer storm. My aunt was trying to run with me on her back to reach shelter. Instead, the police at the corner traffic tower let us in. The traffic tower is designed for one person to sit and direct the traffic light. So it had barely any place for us to stand. It was very kind of the traffic controller to let us in for those 15 minutes and I got a chance to watch him control all the light switches. That satisfied my long time curiosity about the traffic towers.