This book is based on my diary. When I was in middle school, I had the habit of writing a diary. Because I was afraid that my parents would peek, I would stop writing down a paragraph.

When I was recovering at home last year, I picked up this habit again. But I am an impatient person, and I often forget the next day’s things on the first day. This is of course very bad, it is tantamount to taking life in advance. But it also has the advantage that it makes my writing full of predictability. At least that's what I think. The result of this is that this book breaks through the shackles of the diary style, making it look like a diary and a novel unlike a novel. A similar confusion is that I never seem to be able to tell the difference between reality and fiction. This problem made me become an idealist prematurely. At the same time, I was often asked whether the things I wrote were true or false. I hope readers will stop asking such silly questions after reading this article. I don't want to get into a lawsuit with the characters in my book. Speaking of the characters in the book, I think they and their names are not my invention. Our names are too short, and with the father's surname and husband's surname, it can only be four characters at most. This has made me angry for it for many years, and this time I finally got my revenge. In fact, many people have tried to put the names of characters together with the content in the book. The most successful ones are Cao Xueqin and James Joyce. What I have done is just carry forward the tradition they started. Those who know it will think so, and those who don’t know it will think that there is a virus on the computer.

As for the title of this book, many people will think of a famous joke. However, if you really read this book from beginning to end, it will be difficult to find its shadow. Some people may be disappointed by this and feel that I have misled them. But they should also think for me, where in the history of world literature is there a full-length novel based on a paragraph. Even if someone can do it, this requirement is too high for me. All I can do is turn this paragraph into a famous saying through the title of the book. I hope that when people mention it again, what comes to mind is not only the scene of male and female love, but also the fatalistic color cast on this scene. This is the main reason why I want to emphasize that, unlike my previous works, this time I will try to be very restrained in terms of humor, in order to make my thinking more powerful. Although thinking is my weakness. As for the actual results of my efforts, I can't say, it depends on the readers' reaction. Don’t take this as a humble statement. Don’t forget that readers’ reading habits are also developed by writers. From this point of view, the burden on our shoulders as writers is really not light.