What is the study work of history graduate students during their school days?

In China, the postgraduate stage of history attaches great importance to "learning from teachers", so students from different schools, even different tutors from a school, have basically different learning work in the postgraduate stage, and the difference may be very large. There is also a "captive" type, where the tutor will set up an office (in fact, my tutor also has it, and my brother is here every day, but I am used to my computer and my environment, and of course there are strange living habits such as getting up at two in the morning to write), and then stipulate the time for students to be in the office every week. Many tutors will have their own research projects, and "captive" is undoubtedly the best way for students to participate in the tutor's research projects. Normal work and study is nothing more than reading books, reading documents, sorting out materials and writing papers. I think graduate students in most disciplines have done this except experiments. There are no experiments in history, but I seldom take part in field work and am not very familiar with it. However, some research directions and methods attach great importance to field investigation (a student in our class who studies Hakka by historical anthropology has to improve in the rural areas of Hakka county for several months every year). In fact, studying history doesn't feel like you can't get out of that pile of old papers as you think. No need to go to the library, no need to go to the fields, no need to look through ancient books. But at the very least, we should also establish our own historical view system and database. The historical view system is used to understand other people's words and opinions, and the database is used to construct your own words and opinions, and to conduct textual research on some interesting things. Ancient historians believe that the study of history should have three advantages: talent and knowledge. No matter which of these three points can be slightly improved, it is the harvest of graduate school. I'm still trying.