Hard-pen calligraphy copying, if successful, natural words are like people, if writing works is plagiarism?

Of course not. It is a tradition for China people to learn calligraphy, but it must be pointed out that if your calligraphy is the same as others', it doesn't matter. Learning books is inevitable, but your handwriting is the same as others'. Then you wrote a copybook and signed someone else's name to sell books for profit. This is plagiarism!