If you encounter a rainy day, heavy rain, the worst thing is that you don't have an umbrella, what will you do, run hard? Or walking in the rain? This reminds me of an apparently philosophical story: there were two people hanging out on the street, and suddenly it started to rain heavily. One of the passers-by, A, ran away, while passer-by B remained unmoved and insisted on the original Pace, passerby A is very curious to ask: Why don't you run? He replied: Why run, is there no rain...