The difference is that the "profiting from national disaster" Chengjue does now ultimately flows back into his father's treasury. After all, Chengjue has made military pledges regarding money and grain, and must deliver satisfactory results;
As for the Fan Family, they likely wouldn't hand over the profits from smuggling, would they? At most, it goes as far as the Qu Clan.
"Is the journey smooth?" Zheng Fan asked Fan Yongxin.
"In response to Lord Zheng, though the journey is winding, it's still smooth."
"Is the journey safe?" Zheng Fan inquired.
"In response to Lord Zheng, it's complex but orderly."
"Then I'll trouble you."
"You're too kind, Lord Zheng. Your visit to Chu is an honor for Chu and the Fan Family. We will certainly serve you wholeheartedly."
"Good, if I meet the head of the Fan Family, I will personally convey my greetings."
"As your servant, I thank you on behalf of our family head."
