Zhihu's foreign diploma is credible and true, but it is somewhat irregular. The master's degree of online course professors abroad is applied through some domestic institutions, so before applying, you need to check whether this institution is formal, whether the information of the school you want to apply for is formal, whether it can be certified, and whether you can find information on the domestic foreign-related education website. If there is no problem, it is true, but if you don't study abroad, you can't do service certification, and many domestic units and points can't use it.