This week, two cold air came one after another. Will it really be cold after the first frost?

According to the latest data released by the National Meteorological Observatory, two cold air will come one after another in the coming week, and there will be a sharp cooling. And the time of this card happens to be in the twenty-four solar terms? First frost? The ancient naming is still very appropriate. First frost? As the name implies, it's going to be frosty, the temperature difference between day and night is getting bigger, and there is a sharp drop in temperature all over the country. When it is cold, the lake will even freeze. After the first frost, it means that it has entered late autumn and is not far from winter. At this time, the outside world will get colder and colder. Everyone really needs to put on autumn clothes and trousers, as well as windproof coats, hats and scarves.

Climate change follows a fixed law, and the order of spring, summer, autumn and winter has never shifted. Although the meteorological change of the earth will make each season show different characteristics, it only fluctuates within a certain range. For example, everyone will encounter cool summer and warm winter, and the temperature will fluctuate up and down a baseline, but it can't deviate too far, otherwise the environment will have a big problem. One of the biggest reasons why organisms can thrive on the earth is that the ecological environment is relatively stable. Therefore, the ancients in China also summarized some specific laws, and the twenty-four solar terms are an example.

It is common sense that the weather gets cold after the first frost, because the summer heat gradually disappears, the autumn is getting stronger, and the positions of the sun, the moon and the stars have changed. Although the ancients did not understand scientific principles, they could also sum up simple knowledge based on their life experience, which is a very remarkable place. Of course, modern people have made scientific research on various laws of climate change. For example, the cooling is mainly due to cold air, and the seasonal change is due to the change of the position of the earth relative to the sun, which allows us to better adjust our lifestyle and social progress is also reflected here.

Since the season has changed and the weather is getting colder and colder, everyone should be prepared for cold and warmth. Put on all the autumn clothes and trousers, coats and scarves to keep warm. In addition, don't stay up late, and it is also important to drink more hot water, because changing seasons is the time when colds are frequent. Everyone must protect their health and go out to exercise more when they have time.