In this chapter, we learn that all the patients in the northern hospitals have been cured of the disease, and that all of the southern patients are now in stable condition. We also learn that the two southern doctors, Fan Wujiu and Xie Bi'an, have not shown up to deliver the antidote to the northern patients. We learn that fan Wujiu has set up a trap to prevent him from making the antidote, and he has also set up an indelible mark on the southern doctors