By the way, it has been almost a month since this book was put on the shelves. I would like to thank everyone for your support in advance!

Although the results of this book are indeed very poor, seeing that there are still readers and friends supporting this book, I feel regretful and excited at the same time.

What I regret is, why can’t I write this book better? Only in this way can I be worthy of everyone’s support!

What's exciting is that everyone's supportive attitude of never giving up has become a gentle and endless motivation.

So, please give me a hand because coding is really hard and difficult!
Chapter completed!