All kinds of people stayed in the hotel, and all kinds of stories kept happening. Some were cute, some were hateful, some were admirable, and some were disgusting; some were pitiable, and some were embarrassing. The all-encompassing world blends into it and becomes a small colorful world. Salute to all hoteliers, to all those who have a passion for hotels, and to all those in the service industry who want to complain about all kinds of weird guests. I would like to dedicate this book to everyone who has been, is, or will be engaged in the hotel and service industries in the future.