If you are in Chengguan District, generally nobody cares, you can go in freely. No one will stop you from studying, you can go at ease. If you are from Yuzhong Campus, you may be from Lanzhou University. I remember when we were in school, we often saw Lanzhou University students studying in the public teaching building. Just go to the logistics department and get a temporary card, which will be convenient for eating. In a word, no one will stop you from studying. I remember a classmate in our dormitory often goes to the library of Lanzhou University to read periodicals.