The blind are a group that needs more care. Small details can ensure their sense of security and happiness. A small act of a blind person pouring boiled water may accidentally cause a lot of injuries. Blind people can feel the height of water by touching, but cannot directly touch boiled water with their hands. Therefore, we thought of an indirect method. Make a hole in the handle between the thumb and index finger. Keep an edge of a safe area below, and feel high temperature due to heat conduction. Stop adding water immediately when water flows into the hole.