in the north of China和in northern China,in north part of China的区别

in the north of China=in northern Chian=in the northern part of China在中国的北部地区
in North China在华北地区能给些例句么They discovered a new oil field in north china 他们在华北发现了一块新油田。 Harbin is located in the northern part of China.哈尔滨位于中国的北部。