There is no specific duration for this course. This course is different from school to school, and the requirements of each major and college are different. I've seen schools require an internship for half a year, only 1 month, and I've seen students require an internship for three months and practice for half a year by themselves. You can choose the length of time according to your own arrangement. For example, when the general school arranges the internship time, it is a junior, but at this time, many students just want to take the exam and take the postgraduate entrance examination. If you want to take the public examination and take the postgraduate entrance examination, you can hand in the information needed by the school through your own contacts. Then I suggest you take the exam with peace of mind and take the postgraduate entrance examination. If you can go to the workplace after graduation, then you can plan the duration and location of the internship.