There is also a difference in getting a certificate. In-service doctors are divided into doctors with equivalent education and doctors with dual certificates. Candidates who apply for doctoral degrees with the same academic qualifications do not need to take the entrance examination. Candidates can only get a doctorate after graduation, but can't get a diploma. Social workers who apply for dual-certificate doctors need to take the entrance examination, which is difficult, but they can get academic qualifications and degree certificates after graduation. Candidates who apply for full-time doctoral degrees need to take the entrance examination, which is also difficult. Generally, a tutor personally proposes it, but you can also get a dual-certificate doctor after graduation.