Jinan educational periodicals do have even numbers.
For example, the domestic issue of Middle School Times Magazine is 37 bar 1069 slash Z, and the international issue is1003bar8116. Another journal named Journal of Jinan Vocational College has a domestic serial number of 37 bar 1434 slash Z and an international serial number of 1673 bar 4270.
In addition, Journal of Jinan University (Social Science Edition) has a unified domestic serial number of CN37 Bar 1377 slash C and an international standard serial number of ISSN 167 1 Bar 3842. The double serial numbers of these periodicals show that they are distributed at home and abroad, and have high popularity and influence.