Ancestor worship is a custom that has existed for a long time in Vietnam. This action shows the respect of the grandchildren to his ancestors. During ancestor worship days people often bore many delicious dishes. According to the concept of the ancient people on these days, ancestors and grandparents will often go there and eat the food they make so people pay much attention to making a hearty tray to express their respect. with his ancestors. I think this is a very beautiful custom because they show our feelings for grandparents and ancestors.