Multi-contribution means that the author submits the same paper to multiple journals at the same time. This kind of behavior is strictly prohibited in academic circles, because it may lead to academic misconduct, such as plagiarism and so on. Therefore, if you want to contribute more than one article, you need to pay attention to the following points:

1. Understand the submission rules of journals: different journals may have different rules for multiple submissions. Some journals allow multiple submissions for one manuscript, but require the author to make a clear statement when submitting the manuscript; However, some journals explicitly prohibit multiple contributions for one manuscript. Therefore, before submitting a manuscript, you should carefully read the submission regulations of the journal and abide by the relevant regulations.

2. avoid repeated publication: if your paper has been hired and published by a journal, you can't contribute to other journals. Otherwise, it may be regarded as repeated publication, which will damage your academic reputation.

3. Pay attention to the time schedule: If you decide to submit more than one article, you need to arrange the time reasonably to ensure that each journal can receive your manuscript before the deadline. Besides, you need to set aside enough time to deal with possible problems, such as reviewing comments and revising manuscripts.

4. Honesty and trustworthiness: In the process of submission, you should be honest and trustworthy, fill in relevant information truthfully, and abide by various regulations. If you violate the relevant regulations, you may face serious consequences such as revocation of your degree and expulsion.