The exams last approximately nine hours over a period of two or three days, depending on the province in which it is held. All students must take exams on Chinese and Math. Candidates can choose one subject from English, French, Japanese, Russian, German or Spanish for the foreign language portion of the test, with most students selecting English. Students must also choose between either the liberal arts (文科倾向) or natural-science (理科倾向). Students who choose liberal arts receive further testing in History, Politics, and Geography (文科综合), while those who choose natural sciences are tested in Physics, Chemistry, and Biology (理科综合).