Please write a copy within 500 words for your article. The copy is a summary or reminder of the main content of the article. It serves to briefly introduce the content of the article and attract people to read. However, I don't need to attract people to read, but monthly reading is not bad. So should I write the copy or not? Anyway, if I don't write, it will be in vain. If I write, it will be in vain. Even if I write, it doesn't matter whether I write in vain. So, the above is the end of the copywriting.