The subject wants to ask, "Can't the author contribute for others?" Yes It doesn't matter if the author doesn't contribute to others. If you contribute, you can register online. You can also contribute to others. You can also contribute by email. You can also contribute to others by email. Many foreign periodicals also have journalists. Generally speaking, the correspondent is his mentor, but this correspondent is also very important. Generally speaking, it is not the author who can contribute to others.