It should be noted that female chickens, or「chicks」as it were, copulate in the same orifice (the cloaca) as from which they also defecate, and the suggestion in these elements is that the manner in which a concubine could BE PROMOTED, ASCEND within the ranks was to emulate female chickens, in that regard…perhaps that is how the English term 'chick' started in the first place. Elements describe the position assumed by bird copulation,「sloping soil terrace steps raised with feces, over the ground」in the lordosis position, the「lord's access point」widely made available.
　「Slope, buttocks with raised roosting grid above ground or feces」describes the commonly-practiced collection of human and other animal feces mixed into a slurry and carried up the slopes to be spread over the water-filled paddies as fertilizer. Upper-right element (升) refers to a wooden grid raised and fastened above the ground in a chicken coop for the birds to use when roosting. As anyone who has ever kept chickens or who has walked below telephone lines knows, roosting birds spontaneously defecate large amounts of excrement while sleeping…this seems to also have been the case with obese concubines, by the way. Chicken excrement makes excellent fertilizer, and to collect it from under roosts is practical. On the other hand, concubines were simply kept as caged animals, and little data remain explaining fecal collection methods of Chinese harems.
　In the past, rural human beings also used the same sort of wooden frame for leaning against or sitting upon while defecating that enabled easy fecal collection as fertilizer. Boy scouts refer to this apparatus as a 'kybo' that in its simplest form is each end of a stout branch lashed to the top of a tripod. Note that it is quite easy to fall over backwards if the user become a bit too relaxed, with some undesirable consequences. Various suggested acronyms of k.y.b.o. explain the preferred usage technique to keep your buttocks out of the pit.
　Elements can easily refer to human body parts as well, meaning to BE PROMOTED and RAISED IN RANK, mostly related to working with others in a service-providing organization. See the various elements for details.

Modern definitions (that generally disregard history) …excluding politically incorrect concepts and other meanings deemed offensive today; may list only pigeonholed definitions, euphemisms, or meaningless mnemonics)
Chinese: variant of 升
Japanese: to ascend, to go up, to climb, to rise, to go to, to be promoted, to add up to, to advance, to swim up, to sail up, to come up
Unihan extended: promote, rise, ascend
EDRDG: go up; climb