As far as order is concerned, under the current system,
Education: technical secondary school, junior college, undergraduate, master, doctor.
The corresponding degree is:
Technical secondary school, junior college-no degree
Undergraduate-bachelor degree
Postgraduate master's degree
Doctoral students-doctoral degree
A doctor is the highest level of a degree.
"Postdoctoral" refers to the doctoral degree winner who is allowed to enter the post-doctoral research mobile station to engage in scientific research, not a degree.
"Academician" is not a degree. China Academy of Sciences and China Academy of Engineering have the title of "Academician". People who are called "academicians" are scientists who have in-depth research or profound attainments in a certain field.