Of the two cities Zhuozhou and Kaiping which has the larger population ?
Zhuozhou: Zhuozhou () is a county-level city with 628,000 inhabitants in Hebei province, bordering Beijing to the north. Kaiping:  Kaiping has a population of 699,242 as of 2010 and an area of 1,659 km² .
Kaiping