1. According to today's headline information, open China HowNet, click "Advanced Search", and then select the document source "Shuobo" in the navigation bar.

2. Select the subject category of the major you are looking for on the left, only select this one, and clear the others.

3. Click on this category, and all relevant documents will come out.

This category may contain many disciplines, so you need to find your discipline in the "discipline specialty" of group browsing, and then filter it.

5. Finally, you should choose the doctoral thesis of Nanjing University, and the webpage will continue to drop down. You can find "degree awarding chain to unit" in the navigation bar on the left, and select Nanjing University.