It's tiring to work for a long time, and it's tiring to stare at the screen all the time.

GPS monitoring, his main task and post is to watch monitoring, watch some problems of monitoring and report them in time. Therefore, we should always keep an eye on the monitoring, so our eyes are hard, our working hours are long, and indoor ventilation is not good for our health. The key is that you can't make money and earn very little.