I’ve been a bit calvin lately, and I didn’t write what I wanted to write.

I’ve been a bit lazy lately, I’m not good at writing scientific and technical articles, I have good ideas, and I couldn’t write what I wanted to write. I wrote and deleted it, and I deleted it and wrote it. I am not satisfied. In the past two days, I have only followed one chapter, and I will start to make up later, and I owe two chapters first.