Blog has certain advantages and functions for a person.

First, through the study of books and online materials, as well as the development of actual projects, we can master certain knowledge and technology, but this mastery will be vague. If you want to master it more deeply, you can try to explain what you know. In the process of explaining (in written form), you will find your own shortcomings in mastering knowledge, so as to further improve your knowledge system.

Second, when you are engaged in a profession, you usually use 20% of your knowledge to solve 80% or even 98% of your daily code problems, while for other knowledge, it is easy to forget it because of its low frequency of use. Writing down your knowledge can further deepen your memory and record the basic knowledge you have mastered.

Third: Many large companies will value a person's knowledge accumulation. Blog is a good medium to prove your knowledge accumulation. Of course, you can also choose github or coding.