Tomb-Sweeping Day was a few days ago and a few days later.

The first three days and the last four days refer to three days and four days before and after Tomb-Sweeping Day.

Tomb-Sweeping Day is an important traditional festival in China, which falls on April 4th or 5th of the lunar calendar every year. The first three days in Tomb-Sweeping Day and the last four days in Tomb-Sweeping Day refer to the first three days in Tomb-Sweeping Day and the last four days in Tomb-Sweeping Day, that is, from April 2 to April 7. The Qingming Festival for ancestor worship is very long, 8 days before Qingming Festival 10, and 8 days before and after Qingming Festival 10 (the turn of mid-spring and late spring). These nearly 20 days belong to Qingming ancestor worship.