C79 The Origin of the Black Market

As a famous scholar in the country, Du Qingshu naturally had the right to go to the last few buildings. Of course, he only came to Building 3. Those who were able to come here were mostly the top officials in the vice hall. Most of them were professors and experts, which could be considered as a stronghold of theirs. That's why Du Qingshu and Yan Jidao kept greeting people along the way