Jiang Chuan exchanged the cow for fifteen fish and a basket of eggs.
Based on the market price, a healthy and plump cow is worth fifteen fish. For such a skinny cow, at most ten fish would suffice. However, Jiang Chuan felt that the old women was kind-hearted, and they didn't lack a few extra fish, so he decided to give her more than what the cow was worth.
Jiang Xia inquired about the condition of the old women's husband. Although she knew that the isatis root might not help, she still believed that they might find something useful at the pharmacy. So, Jiang Xia packed another basket of isatis root for the old women.
The old women was deeply moved and was at a loss for words, not knowing how to express her gratitude.
Suddenly, a shout came from outside, "Granny Liu, Su Zhen is in the village! Send someone from your house to see him."
Granny Liu responded and prepared to escort Jiang Chuan's family out with an empty basket.