I went to one of the night club, and meet a bunch of people, seems to be quite a friendly bunch. At one stage we took one photo together and then say good bye.
I went back to the station to catch a train back then I realized that I don’t have my wallet in my back pocket. So I rushed back to the venue and the guy let me in to search whether I had dropped my wallet. I searched from run to room and the wallet is no where to be found. Then I realized that I might have put the wallet at my front pocket, and round about the same time I woke up.