The thin man led the way, and Ye Ling followed.
On the way, the thin man probably wanted to leave a good impression on Ye Ling, so he introduced a lot of things about the black market. Of course, he didn't go into depth and only introduced some basic information.
These people earned money from information disparities, so they naturally couldn't tell Ye Ling all the information.
Through the thin man's introduction, Ye Ling got a basic understanding of the black market.
The black market had many types of transactions. Some of the transactions involving large sums of money were strictly prohibited by the country. If caught, the consequences ranged from jail time to even being shot.
The most common and relatively safer transactions were daily necessities. If caught, the punishment would be relatively light, usually imprisonment for education or a few days of labor reform.