I didn't want to publish anything, but when it was actually put on the shelves, I still wanted to write something and make a souvenir.

The results of this book are not very good, it can be said that it is very bad, but I did not give up, and every word, sometimes for me, is a little growth.

From the beginning of the arrogance, when I wrote, I slowly understood my own shortcomings, little by little, I hope that after writing this book, for me, I can make great progress.

Finally, cheer for yourself, I'm not the best, but I'm going to keep trying.

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