the part of northern margin of North China platform
Northern margin of North China Craton
northern margin of North China Platform
the northern margin of North China Block
north margin of North China Plate
north margin of North China platform
the middele north margin of North China Block
the middle north margin of North China craton
the north margin of North China platform
southern margin of North China Craton
tectonic belt of northern margin of Yunkai block
structural belt of north margin of Caidam basin
the north of North China
continent of northern China and adjacent areas
deserts of northern China
farming-pastoral ecotone of Northern China
Farming-pastoral zone of northern China
greenhouse of northern China
middle segment of the northern margin of the North China craton