Shu Yu thought for a moment and asked Ah Ning, "When Young Master Tan came down from the mountain, didn't he ask Jiang Kuanyu what was up there, and why there was someone guarding it?"
"Yes, he did. Jiang Kuanyu told Young Master Tan that up there was the black market, and Young Master Tan understood." Ah Ning looked puzzled, "But I don't quite understand, Second Sister, what is the black market? What does it do? Is it really dark and problematic?"
Shu Yu, "..."
Alright, the little girl is still too young. Even if she heard it, she probably wouldn't understand what it means.
She pondered for a bit, trying to use milder words, "The black market is where transactions happen in secret. Some stolen goods are bought and sold on the black market. Strictly speaking, it's illegal."
Ah Ning's eyes widened suddenly, "Illegal? No wonder Jiang Kuanyu was so nervous, not letting Young Master Tan go up there."
