The section in Orange Polar Bear when Jiyoung and William finally meet, in the ice world, and the convention changes, and the characters can understand each other.  The surtitles stop at this point, and it gradually becomes clear that Jiyoung and William understand each other.  This is the first and only moment in the piece where this happens.  It is the convention used during 'Looking for Yoghurt', but here it has an extra element, in that there is some symbolic significance to the fact they now understand each other, the place in which their stories meet has become actual, and they are also aware of it.  'Oddly enough, I understand Korean here'