Why can't I go to the grave on the fourth day of the Lunar New Year?

There is no clear stipulation that people on the fourth day of the Lunar New Year are not allowed to go to the grave.

Because this kind of thing needs to know the most accurate date of the day and then know that the yellow calendar knows whether it is suitable to sacrifice to the grave through the taboo items on the yellow calendar.

The fourth day of Lunar New Year's Eve is generally called the fourth day of the first month. The fourth day of the first lunar month is also called the Year of the Sheep. This is the day when China people meet God. In the old imperial calendar, it was often said that "three sheep (yang) open Thailand" is a symbol of good luck and a day to welcome the kitchen god back to the people.