Black Technology Teaching Live Broadcast Room

I prefer this style: talking nonsense in a serious manner, and what I talk about seems to come from textbooks. It happens that I am interested in both physics and computer languages, but my interest has not reached the level of reading the book page by page. It is recommended that the knowledge involved in each chapter of this book should be at least 1-2 pages of the textbook. However, there are too many punctuation marks in the live conversation---it just refers to [ ]. In other words, in the future, the punctuation mark of the paid chapter will count as a few words. Also, it should be updated a little more. Originally, there were a lot of "pop-up" dialogues, and I could finish one chapter in just a few glances.

The universe is small! [Url=ssbvWMEQ]