Those called the 'Black Five' mostly come from intellectual, powerful, or wealthy families. They are either landlords, rich farmers, counter-revolutionaries, bad influencers, or right-wingers.
Each of the categories has their own connection which couldn't be estimated. Although they are currently at their lowest point, they still have connections with powerful people in the government or the military. What's more important is that after reinstatement, their assets can be recovered. They also have the treasure that was buried before they were captured.
Having a connection with them would only benefit her. After thinking about it, Lu Jueyu decided to visit them later. With everyone busy working on the field, no one would notice her visiting the 'wicked people' even during daytime.