The black market transactions aren't as lawless as one might think. In fact, the rules they follow are much like those of the Sunshine Market. The main difference is that the money used for investment often has murky origins, making it unsuitable for investment in the Sunshine Market. Yet, the Finance market's casino-like allure draws those who dwell in the shadows.
Gu Nuan had indeed never had contact with the black market, and only ever heard about it like stories or TV shows. So, when such a matter suddenly unfolded around her, involving her son, she was somewhat caught off guard, though not entirely unprepared. She only caught wind that her husband knew some kind of godfather? When did her husband get acquainted with such a formidable figure in the underworld, she had no clue.
