The system clarifies the core differences between the X1 and X2 types of study visas for China in terms of legal nature, applicable scenarios, and post-entry procedures, helping foreign students accurately choose the visa type based on their study duration and handle subsequent procedures in compliance. This article clearly defines the fundamental boundary between the two types of visas, with a 180-day stay as the dividing line: The X1 visa is applicable to long-term students who plan to study in China for more than 180 days. The holder must apply to the exit-entry administration of the public security organ of the intended place of residence for a study-related residence permit within 30 days from the date of entry, and only then can they legally stay for a long time. The X2 visa is applicable to short-term learners who plan to study in China for no more than 180 days. During its validity period, they can enter the country only once. Before the end of their stay, they do not need to apply for a residence permit and must leave the country on time. The content further reminds that X1 visa applicants must complete the residence permit within 30 days after entering the country. Failure to do so within the time limit may result in legal consequences of illegal residence. The X2 visa holder is not allowed to engage in activities unrelated to the purpose of study during the stay period, nor can it be converted to a long-term study status through the X2 visa. It is also reminded that if the location of the school changes or the student transfers after entering the country with an X1 visa, the procedures for changing the residence permit must be reprocessed.