1.？ Security: The university campus is usually a relatively closed environment. In order to ensure the safety of students and staff, schools usually take a series of security measures, such as access control system and security patrol.

2.？ Management: University campus is an educational and research institution, which needs effective management and organization to ensure the quality and efficiency of education and research. Opening the campus may bring some difficulties to management, such as how to control the entry and exit of outsiders and how to ensure the safety of campus facilities.

3.？ Educational resources: The university campus is a gathering place of educational resources, including libraries, laboratories and teaching facilities. Opening the campus may lead to excessive use and waste of educational resources, thus affecting the quality of education and research.

Although it is reasonable for the university campus not to be open, some people think that the university campus should be open to the society in order to make better use of the resources and facilities of the university and promote the development and progress of society.

Those who support the open campus believe that the open campus can promote the contact and interaction between the university and society, let more people know about the educational and scientific research achievements of the university, and provide more educational and cultural resources for the society. In addition, an open campus can provide more practical and social opportunities for college students and improve their comprehensive quality and social adaptability.

Those who oppose opening the campus think that opening the campus may bring some security and management problems, such as the entry and exit of outsiders may bring security risks, and the excessive use of campus facilities may lead to damage. In addition, some people worry that opening the campus may affect the learning and working environment of students and faculty, thus affecting the quality of education and research.

In a word, whether a university campus should be open to the society is a complex issue, and many factors need to be considered. Whether it is open or not, universities should attach importance to the quality of education and research, protect the safety and rights of students and faculty, and actively interact and cooperate with society to make contributions to social development and progress.