Cross-festival fishing (that is, the exchange day of each solar term in a year) is basically a few words? I am in Fangshan District, Beijing.

This is not very accurate either. It mainly means that there will be obvious climate change when the solar terms change. If there are obvious and large-scale changes in temperature and pressure on the exchange day, the fish will definitely be sealed for a period of time. However, generally speaking, the closing time will not be too long, and there will be an opening climax after the climate stabilizes.