Do you have to be husband and wife to accompany you abroad?

No, just meet the students' family conditions.

The "Regulations on the Administration of Accepting Foreign Students in Colleges and Universities" has corresponding provisions:

Forty-fourth families of foreign students can apply for an "L" visa to accompany them to China by accepting the invitation letter from the school. The exit-entry administration department of the public security organ shall, by the official letter of the school, extend the visa for the accompanying family members of foreign students, and the stay period of the accompanying family members in China shall not exceed the validity period of the Residence Permit for Foreign Students.

Extended data:

?

Provisions on the Administration of Accepting Foreign Students in Colleges and Universities:

Article 47 When transferring to other cities, foreign students should go through the emigration formalities at the exit-entry administration department of the public security organ in their original place of residence. After arriving at the immigration place, you must go through the immigration formalities at the exit-entry administration department of the public security organ of the immigration place within 10 days.

Foreign students who leave the country temporarily during their studies must go through re-entry procedures before leaving the country. If you still need to study or stay in China after the visa or residence permit expires, you must go through the extension procedures before the visa or residence permit expires.

Forty-ninth foreign students must leave the country, complete their studies and drop out of school within the specified time after graduation. For foreign students who have been ordered to drop out of school or expelled from school, the school should promptly notify the exit-entry administration department of the public security organ as required.

Baidu Encyclopedia-Regulations on the Administration of Accepting Foreign Students in Colleges and Universities