For the credit mobile students, they will meet some specific academic difficulties. A survey by Klahr and Ratti emphasizes the importance of the lack of recognition of periods abroad and credit transfer.[9] Besides, insufficient knowledge of academic prerequisites and qualifications of various countries, differences in the structure of the academic term, disparities in the times at which examinations are taken, these are all common problem of credit mobile students when they engage in academic activities.[9] Moreover, the lack of foreign language skills is considered as another big barrier to most of the mobile students, not only the credit mobile students.[9]