Wiktionary
hang upon
vb. 1 To regard with passionate affection. 2 (cx military English) To hover around.
Usage examples of "hang upon".
Would that make you pause and think and hang upon every word, and ponder those words later, in your chamber?
I had told myself that the future of the human race might easily hang upon our ability to meet and to get along with an alien race, for the time was coming, in a hundred years from now, or a thousand years from now, when we’.
And Wang Lung bought red cloth to hang at the doors for curtains and he bought a new table and two carved chairs to put on either side and two painted scrolls of pictured hills and water to hang upon the wall behind the table.
Those from the counties to the south, they will I hang upon the walls .