Wu Collection, Middle Volume Radical: Sickness (bìng) 痘 Kangxi strokes: 12 Page 773, Entry 18 According to the Dictionary of Characters (Zihui), pronounced dou. Smallpox or pockmarks. According to medical texts, it is a toxin present from birth. For those who never develop it during their lifetime, there is a method using divine smallpox; the pock fluid is placed into the nose, and upon breathing it in, it appears.