The 24 solar terms have completely lost their own value and significance, so we don't need to learn and inherit them. Is that so?

You can also say that. Just look at it. After all, I used to eat according to the weather, but now I eat according to the technology. There was no weather bureau before, so we had to make production plans by experience. Like the twenty-four solar terms, ancient agricultural tools are the crystallization of ancient wisdom, but why are only the twenty-four solar terms preserved and the ancient agricultural tools now directly in the museum? It is precisely because the 24 solar terms are out of date, but at least their spread will not affect the stability of the country, but the ancient agricultural tools and technologies have fallen behind. If it is still used in labor production, the low grain output will seriously affect the development of the national economy and the stability of the country, so scientific and technological progress is the last word. Without it, the United States will not become a major exporter of agricultural products. This is a good example.