Xingque always thought that his biggest worry was how to move the coffee machine home from work, until the alien race "Polite Stars" suddenly descended on the earth. They're great at smiling, keen on correcting human table manners, and even encourage everyone to compliment each other's hairlines at meetings. As the world plunges into a etiquette revolution, Xingque is forced to become the "etiquette translator" between humans and alien races. But soon, he discovered that this group of aliens actually had an irresistible fatal attraction to human "courtesies" - every "please come first" may make them faint for three hours. Xingque's ultimate goal: to use the most exquisite mandarin and social nonsense on earth to save mankind from the disaster of politeness and give himself a quiet coffee time. This book uses sharp satire and absurd humor to deconstruct the vanity fair of "coexistence" and "civilization" and reveals that in a global crisis, the most dangerous weapon is "thank you."