It was ok before 20 18, but not after that. So is Peking University. At present, people outside the school can only make an appointment through the official WeChat applets of Peking University and Tsinghua to "visit Peking University" and "visit Tsinghua", and they can only enter the school after the appointment is successful.

Of course, there is another way, that is, to make friends with a college student from Tsinghua, Peking University, and then let him/her bring him/her in.

Our family of three went like this this this summer vacation. At that time, a friend recommended a WeChat applet called "Qingbei Tour Guide". It is convenient for us to make friends with Tsinghua, a student of Peking University, and make friends with them. The quality of these students is really good, very warm and friendly. Worthy of being the darling of the highest institution of higher learning! This platform is also a work-study platform for these students, which is trustworthy!

I hope my answer can help you!