i could have mentioned the Home Town of SHASHA where i spent my spring holiday hits time. I got some stuff at the wikipedia which are useful for having a basic idea about the region:
Hulunbuir (Mongolian: , Kölün buyir; Chinese: 呼伦贝尔; Pinyin: Hūlúnbèi'ěr) is a region that is governed as a prefecture-level city in northeastern Inner Mongolia, in the People's Republic of China. Its administrative center is located at Hailar District, its largest urban area.
Until October 10, 2001, Hulun Buir was administered as a League. The area is 263,953 km2 (101,913 sq mi) and population 2.710 million as of 2004, while the gross domestic product was RMB 21.326 billion. The jurisdiction area of the city is actually larger than many Chinese provinces (and 42 U.S. states), and Hulun Buir is recognized as the largest city in the world by area, although the actual urban agglomeration is just a very small part of the region, and the average population density of the area is very low.
Major scenic features are the high steppes of the Hulun Buir grasslands, the Hulun and Buir lakes (the latter partially in Mongolia), and the Khingan range. Hulun Buir borders Russia, Mongolia, Heilongjiang province and Hinggan League.
Historically, the eastern part of the area is also known as Barga.

Demographics (as of 2000)

ethnic group population share
Han 2,199,645 81.85%
Mongols 231,276 8.6%
Manchu 111,053 4.13%
Daur 70,287 2.62%
Hui 30,950 1.15%
Evenks 25,418 0.95%
Koreans 8,355 0.31%
Russians 4,741 0.18%
Oroqen 3,144 0.12%
Xibe 956 0.04%
Other 1,403 0.05%