What is a memorial to death?

Sacrifice: Initially refers to the tortoise used for divination in sacrifice, and later refers to praying for the dead. It is a ritual, out of one's own spiritual activities.

Dedication: Set offerings on the altar and ask ghosts and gods. For example, the cornerstone of the cornerstone is the offering, and the dedication is to ask the land to cast spells to make the house strong.

As the name implies, the death sacrifice is a ceremony for the dead, which was very popular in ancient China.