How long is the validity of the residence visa for French graduates studying abroad?

The current visa policy for international students in France is as follows: After applying for a visa at the China Embassy or Consulate in France, the visa is valid for 1 year. For a class D French visa (not a Schengen visa, you can only transfer at Schengen once, and the destination is France), you should make an appointment for a medical examination at OFII, the immigration company of the provincial police station where you live, within 60 days after entering France. Then you will be informed to take chest X-rays at the designated place, go to the designated clinic (mostly public institutions such as hospitals affiliated to public universities or CROUS clinic) for routine physical examination, and finally keep your X-rays and physical examination report (some clinics directly mail the report to the police station for filing), and bring all photos, housing certificates, and deposit certificates of local French banks. According to the date of the letter sent to you by ofii, and put a blue sticker in the ofii office of the police station, your first-year visa will become Schengen. Make an appointment at the police station within 30 days before the visa expires to apply for the residence permit carte de sejour for the next year (official website, a provincial police station in the French island area should apply for RDV in advance). Students who get carte de sejour in the second year will be admitted to regular schools in the next year as long as their attendance rate is not lower than the government limit, they are not absent from exams, and their grades are improved (they do not repeat grades beyond the government limit). The reasons for major changes are reasonable and credible. If there are no illegal acts such as tax evasion by illegal workers, they can obtain student residence for the next year, or they can change their status and apply for business, freelancing, work and other residence after graduation.