Since the computer was stolen, the writing of this book has come to a standstill, and with the change of work location, only three chapters have been updated in the past two months. At present, the computer matter has been solved, but there is still no network, the main reason is that the workplace is not stable, maybe the end of the year will leave the current company, and the continuous update will probably not be realized until the Spring Festival.

In addition, in the second half of this year, around the 10th of each month, I will update ten chapters at a time in the Internet café. (To be continued......)