Search for a book on the website of the National Library, which shows the book preservation museum, the Chinese basic museum and the northern Chinese literature area. What does this mean?
The southern district is being renovated in the summer vacation, and many books are not available. You can see if there is a timetable for transformation on the homepage of the national map. Anyway, I went to the South District in mid-July, and foreign documents are no longer lent out. I asked when I would return to normal, but they were not sure. One of the administrators said that I should go after September 10. I can only help you here. I can take a closer look next time.