Which region has more population, Jiangjin District or Qinhuangdao?
Jiangjin District:  The district covers 3200 square kilometres and supports a population of 1,460,000. Qinhuangdao: Qinhuangdao ( ) (秦皇岛) is a port city on the coast of China in northeastern Hebei province. Qinhuangdao:  Its population during the 2010 national census was 2,987,605, with approximately one million people living in the built-up (or 'metro') area made up of three urban districts.
i don't know