In between Chizhou and Xingtai which has  a total area of 12486 km2?
Chizhou: Chizhou () is a prefecture-level city in Anhui province, China. Xingtai: Xingtai () is a prefecture-level city in southern Hebei province, People's Republic of China. Xingtai:  It has a total area of 12486 km2 and administers 2 districts, 2 county-level cities and 15 counties.
Xingtai