When does Qingming close the tomb?

According to the weather query website, the tomb was closed in Tomb-Sweeping Day a month later. There is a custom of opening and closing tombs in Shunde, Guangdong. The tomb opening day is in Tomb-Sweeping Day, and the tomb closing day is in Tomb-Sweeping Day a month later. When sweeping graves, in addition to inviting people to "have morning tea" (that is, offering cakes and tea in the morning), we should also prepare "dinner" for our ancestors in advance (that is, preparing meals for our ancestors).

Grave-sweeping is a kind of "grave sacrifice" and "respect for time thinking" to ancestors, and its custom has a long history. In the north, it is called going to the grave; in some places, it is called "sweeping mountains" or "worshipping mountains"; in the south, it is called "hanging mountains" or "hanging paper".