Population- 2010 estimate
China 1,335,612,968  (Beijing)
Hong Kong 7,055,071
Japan 127,470,000  (Tokyo)
Macau 541,200
Mongolia 2,736,800  (Ulan Bator)
North Korea 23,906,000  (Pyongyang)
South Korea 50,062,000  (Seoul)
Taiwan 23,119,772 (Taipei)