Le Yi's parents live a long life because they often eat tofu. When Raul died, he cooked a lot of tofu, held a banquet and invited villagers from eight neighboring towns to eat bean rice, which was called "longevity tofu". This is the origin of eating tofu at funerals.

With the popularity of tofu, its accompanying folk customs are becoming more and more abundant. The "tofu mat" in the funeral is one of them. Whenever the funeral is over, always invite friends and relatives who come to help and mourn the loss for dinner. The first course of this meal must be tofu, or simmered or boiled. This tofu dish sets the tone for the whole banquet. It is vegetarian and has a moral, which symbolizes the innocence of the deceased. This has become a habit in many places.