The only East Asian cities that topped one hundred thousand in 1600 or 1700 that are not mapped are Xi'an (in Shaanxi, which I group with Ningxia), Chengdu (in Sichuan) and Wuchang (now part of Wuhan, in Hunan). (The areas are mapped for other periods--just not this one.) Xi'an and Chengdu began the century in the 100-199 thousand range, Wuchang in the 60-99 thousand range. Xi'an and Wuchang ended the century in the 100-199 thousand range, Chengdu with less than 60 thousand. Chengdu's collapse is usually attributed to a rebel from Shaanxi who temporarily conquered Sichuan in the 1640s.