Technology: Start by selling mobile phones

The recent updates have been terrible, so I’m sorry to all of you who have been following the book.

The first reason is that he is in a bad state and has no clue at all.

Second, my two children recently had fevers and colds and ran to the hospital one after another. I am really tired and I have just returned home from the hospital.

I will resume updating as soon as possible and will definitely finish the book, thank you.