Out of Changchun and Chengde, site of the huge Qing emperors' palace, which Chinese city had the largest population in 2010?
Changchun:  According to the 2010 census of China, Changchun had a total population of 7,674,439 under its jurisdiction. Chengde:  The urban center had a population of approximately 450,000 as of 2009.
Changchun