Can I sweep the grave before the vernal equinox?
Generally, the new grave (that is, three years after burial) chooses to sweep the grave before the vernal equinox, and the old grave chooses to sweep the grave during Qingming period. It is best to prepare enough offerings before going to the grave, preferably between 9 am and afternoon 15. Go to the cemetery neither too early nor too late. At the same time, you'd better wear some red clothes, red underwear, red socks or red hats, because wearing red clothes will help you to be safe.
Among the ancient emperors, there was a ritual system of offering sacrifices to the sun in spring and the moon in autumn. It is said that the official reception day is in front of the club. During this legal period, only those who have just died can receive all the sacrifices brought to them. Spring Festival usually falls before the vernal equinox, so there is a saying that new graves should be laid before the vernal equinox. So this is also the reason why many people choose to go to the new grave before the vernal equinox and solar terms.