No.

Zhihu netizens commented on the PhD’s research time: 8 a.m. to 11 a.m., no rest on Saturdays and Sundays.

PhD students are generally busy working on projects and research with their supervisors. Their daily routine is the same as ordinary people, eating, drinking, and sleeping. They have weekends, winter and summer vacations, and holidays, but they also have holidays according to academic needs. Work overtime.