Being on guard tells us to think about everything in advance and prevent and deal with problems before they occur to avoid disasters. There is no regret medicine in the world. It is better to make preparations before regretting when something bad happens. Think things through. What discomfort and consequences it may cause. Then carry out prevention and treatment. In this way, there will be no hidden dangers of this or that kind later.

As the saying goes, without long-term thinking, there will be short-term worries. Compared with the cost of prevention compared with the occurrence of disaster, it is definitely worth it.