I wonder if you are talking about Beijing University of Modern Administration? If there is, unfortunately, it is a private university. Private universities are non-educational institutions, and your diploma can't be found online. Only schools and private education websites can find it. The state does not recognize anything that the Ministry of Education cannot find, that is, the national higher education network. You can't apply for civil servants, and you can't work in state-owned enterprises or institutions. Therefore, such a diploma is not recognized by the state.