What do you mean by little people with different skin colors?

Red numbers usually represent alert or dangerous situations. For example, in some warning signs, if there is a red villain pattern, it means that this place may be dangerous and needs attention. In addition, in some occasions, such as the fire escape guide, if there is a red villain's instruction, then you need to take immediate action to find the nearest escape exit.

Yellow numbers usually represent alert or weak situations. For example, in some construction sites, if there is a yellow pattern, it means that this area is under construction, so be careful not to get close to the construction area. In addition, in some traffic signs, if there is a sign of yellow villain, then we should pay attention to the separation of pedestrian roads and not cross the road where vehicles pass.

Green little people generally represent safety or health. For example, if there is a pattern of green little people at the door of the toilet in some public places, it means that this is a public toilet and can be used with confidence. In addition, in some health tips, such as diet, exercise and other fields, if there are signs of green villains, then we should pay attention to these suggestions, which are beneficial to our health and can be actively adopted.