1968 year, Ji'nan celebrates the inauguration of the memorial tower of the revolutionary martyrs of the hero mountain.
before liberation, is Beiyuan outside today?
Ji'nan is low from south to north, so the north gate is suitable for planting rice, and it can also store and absorb urban drainage. Now, northern Ji'nan is all the asphalt road and cement building. I wonder if it has caused the problem of waterlogging in Ji'nan to some extent.