Tomb-Sweeping Day visited the grave two days ago and sent gold bars and pure gold treasures. Just after he left, a bird landed on the grave and stayed for a long time. What does this mean?

When you go to the grave, you must have brought delicious food, such as cooking and candy. No matter what kind of clever animals, as long as they see or smell, they can't wait to come and eat, let alone birds. No matter who brought these things into the grave, they are fake, not true. When birds see those shiny things, they know there are good things and come to look for food.