Yes, you can. You can take an inter-professional exam. The success rate depends on your own efforts and foundation. (Northwest University's Ph.D. in Economics enrolls students in Tianjin, tel: 02266208056) There are two channels for applying for a Ph.D. in Kaobo. You can take the doctor's exam in March and get a double certificate, or you can not take the doctor's exam with the same academic ability.