jisi (korean: 제사; hanja: 祭祀; rr: jesa, ) is a ceremony commonly practiced in the east asian cultural sphere. jisi helps people celebrate their ancestors. jisi are usually held on the anniversary of the ancestor's death. most people participate in jisi but some religious groups such as protestants and muslims do not. the catholic church permitted jisi in 1939. many people who have left their home countries avoid the rites