Someone told me this. On her father's 7th day of death, they set up the altar because they believe the dead will return on that day. True enough, her sister who has the 3rd eye saw the father close to midnight came in to have the meal. He is dressed as how they dressed him for the coffin. He is expressionless and look like a real person. All other cannot see him except that sister. (Memory collected at the Cheng San Public Library during the "irememberGhost stories" campaign from 27 Sep to 30 Nov 2012)