Is it useful to practice copybooks?

Of course, you can practice for a while every day, but you must practice hard!

Writing is not accomplished overnight. After a long time, you can naturally see progress.

I don't know if you have noticed that if you take out the words you wrote six months ago, you will still find that your writing is not as good as it is now.

Since you can achieve this effect without practicing calligraphy, isn't it more obvious to practice calligraphy for a while every day? But it is best to copy.