The school clearly pointed out that non-clinical majors cannot apply for clinical majors. Although the public health service you reported is not clinical, it is also professional. I suggest you consult graduate department of the school and call the school online. The general school will hold the first consultation meeting in Wutai campus in September. You can also consult.

If you can accept your application, you should be prepared for a highly professional major, and your tutor will pay more attention to the relevance of your previous major during the second interview. Public health teachers and all aspects of the situation rank first.

Of course, it is ok to fight for your own interests. I am also an interdisciplinary graduate student, originally studying clinical. Although I was admitted, I sometimes feel that the original decision was a bit hasty. I suggest you consider it while consulting the situation.