Mr. and Mrs. Xiao discuss the possibility of developing an antidote, but they are unable to come up with a single ingredient that can be used to make the medicine. They decide to go to the leading pharmacists in the world and ask them to develop an antidote for their wife. Mr. xiao promises that he will cure both his wife and child if the antidote can be made. He tells Mr. Xingzi that he can save both of them if the child is given the antidote at a price that is high enough to save the adult