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#trivia
this is what every Chinese student learns in geography class at school: the heihe-tengchong line
Hu Huanyong first proposed this in 1935 (!)
94% of the population lives in the red area
the last image is QQ activity heatmap...
this is what every Chinese student learns in geography class at school: the heihe-tengchong line
Hu Huanyong first proposed this in 1935 (!)
94% of the population lives in the red area
the last image is QQ activity heatmap...
since people are loving these maps...
yes the Heihe-Tengchong line is related to the boundaries between the plain and highland regions
It's also related to the 15 inch isohyet (we use 400mm in China). But neither the isohyet nor the topographical line coincides with it entirely.
yes the Heihe-Tengchong line is related to the boundaries between the plain and highland regions
It's also related to the 15 inch isohyet (we use 400mm in China). But neither the isohyet nor the topographical line coincides with it entirely.
