Why did you go to the grave a few days before the vernal equinox?

1, the vernal equinox is one of the 24 solar terms and the fourth solar term in a year. It also has obvious characteristics in climate. It's warm, rainy and sunny at this time.

2, so people will go out for an outing and sweep graves at this time. When they go to the grave, they will be before the vernal equinox, and they can sweep the grave a few days in advance. However, there is no accurate statement that you can do it a few days in advance. It is suggested to choose an auspicious day to sweep graves and worship ancestors. It depends on the specific situation. After all, the situation of each family is different.