What is the progressive social significance of inheriting and protecting Tomb-Sweeping Day culture?

The cultural significance of Tomb-Sweeping Day is extraordinary. It can meet people's emotional needs of remembering their ancestors and strengthen family ties. Through ancestor worship, we can trace back to the source, learn from history and better educate future generations. Seeking roots to worship ancestors and remembering martyrs can unite overseas Chinese at home and abroad, turn their hearts to the motherland and enhance the cohesion of the Chinese nation.