The administrative category is to complete the work, bring forth new ideas, have the opportunity to be promoted to leadership, or be transferred to administrative posts in schools or off-campus. The overall development path is similar to that of civil servants. I wonder if the money will come. Now the state is very strict, and so are schools, you know.
The experimental post is your professional experiment, which may be an off-campus project or an on-campus project. If it is a pilot position for school recruitment, the development path is the same as that of teachers. Well done, you can evaluate engineers, apply for projects, send articles, and take on engineering projects ... If it is recruited by the research group, it depends on whether you and your boss have the ability.
The position of the research group is definitely not as good as the administrative post. If both of them are school posts, it depends on whether they are engaged in administration or research. There is no hobby or specialty, whether administrative or experimental, just muddling along with the so-called iron rice bowl.