First of all, I'm sorry!

Due to the troubles of some trivial matters in work and life in recent days, coupled with the fact that the new job is not very smooth, I am in a state of distraction, so I have been off for a few days and have failed to live up to the expectations of all book friends.

But I will definitely continue to write, so please rest assured.

In addition, the writing of this book has encountered a bottleneck, I will rewrite the outline, and it may be delayed for a few days, please forgive me for the inconvenience caused to all book friends, thank you!