When Elle leaves the hotel to go the set, she is wearing a nurse's uniform with a headscarf and carrying a black handbag. When Lui meets her on the set, she is now wearing a skirt and blouse and still has the headscarf. When they leave the set, the headscarf is left behind. When they get to Lui's house, she now has a white jacket.
After they leave the teahouse, a shot from the side shows Lui standing behind Elle to her left with a gap of about a foot and a half. The next frontal shot shows him standing directly behind her with only a small gap between them.