m 0cm 0pt" class=MsoNormal>In North China mountain regions, the so-called “glacial potholes 2mso-ascii-font-family: ’Times New Roman’; mso-hansi-font-family: ’Times New Roman’">～3 Ma ago” locate mostly now in Quaternary river valleys, and so-called “glacial potholes 10mso-ascii-font-family: ’Times New Roman’; mso-hansi-font-family: ’Times New Roman’">～20 ka ago” locate in Holocene river valleys now, which come into conflict with the landform evolution of North China mountain regions. The alleged "glacial landform” combinations are not the real ones, but rather the mix of landforms from different periods and origins. So, there are not glacial potholes in ml:namespace prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags" />North China mountain regions.