The correspondent is the general manager of this newspaper. From the perspective of intellectual property rights, the research results can be regarded as those of the communication author. The advantage of a correspondent is that he can establish wider contacts with the outside world. In most cases, the correspondent and the first author are the same person, which actually omits the correspondent. Only when the correspondent and the first author are inconsistent, you need to add a correspondent.
Note on the author's address of HowNet: The author should give a detailed mailing address and postal code as far as possible. If there are two or more authors, each different address should be listed in the order of appearance, and the relationship with the correspondent author should be listed in the form of corresponding superscript symbols. If the first author is not a correspondent, he should express it in accordance with the relevant regulations of the journal and inform the editor in advance.