just like the rest i be confuse at the end and have many thought run through my mind . time travel . wifes play a prank and this guy have some serious mental issue . hop the movie would not end without an explanation and to my surprise it do and well google and find this be one of those movie . read many review skim through the movie again and finally understood . or i think . so here go people and the first half be his dream . all his thought play out very carefully . start out with a simple dilemma on his moustache ( identity > > do he understand himself well ) let leave the moustache out to understand good and the dilemma grow deeply with his doubt over his wife . be she be honest . ( there even a scene in which she say she only say the truth and again his thought ) . the scene to the goddaughter birthday be his imagination consider his recent friend at the boat and what if they meet back in paris . brings in his office environment and confusion do people really know him there . and then the clown jacket where he imagine his wife pick it up for him and run off home to get the next flight hong kong to free himself from all the dilemma in his life > > well thats his vacation and thats how he imagine his vacation to have kick off and freedom from his confused and stressed life . reality start when he sit in the boat with the red shirt and beard and eat noodle . post card incident be a trick a big trick and it show him sit in a hotel window write to his wife and well if this take place in his dream then in reality while he be with his wife later after say goodbye to their recent friend how could he have the card . he then flick it to the water . thats confuse . well i agree with most other review the key be the hongkongs night light reflect from the water and it show at the begin then in the middle while he be dream and at the end . thus confirm it all his dream .