Liquid nitrogen is a liquid form of nitrogen formed at low temperatures. The boiling point of nitrogen is -196°C, and liquid nitrogen will be formed when the temperature is lower than minus 196°C under normal atmospheric pressure. If it is pressurized, liquid nitrogen can be obtained at a relatively high temperature. If the human body is touched without protective measures, there is a serious risk of frostbite on the skin.

Liquid nitrogen is not only dangerous for humans, but plants will be crushed even if they encounter liquid nitrogen.

A few days ago, foreign media immersed all kinds of flowers and fruits in liquid nitrogen, and then recorded the moment when they were smashed into pieces with slow motion, which is quite poignant when glass and plaster sculptures are broken.