Initially referring to a STOPOVER away from home, being STATIONED for at least a night away from one's normal home diversions and not the master riding upon his horse…rather, perhaps the「master behaving as does his horse」hence「the lord repeatedly masturbates」when without his concubines to keep OCCUPIED. An overnight stay is to RESIDE TEMPORARILY. Literally perhaps, when a「lord, master」is beside his「horse」and not mounted upon it, both are STOPPED somewhere for a limited time: PARKED, as it were for some refreshments or a rest, break time.
　「Sue M. McDonnell, PhD, is an equine behaviorist on a mission—to inform and educate horse owners and handlers that stallion masturbation is normal, healthy behavior and that trying to discourage such behavior is likely to do more harm than good. McDonnell holds a PhD in reproductive physiology and behavior, and she is the director of the Reproductive Behavior Program at the University of Pennsylvania's New Bolton Center. McDonnell and her research team have conducted several studies pertaining to masturbation in equids, and after years of research and investigation, McDonnell concluded that stallion masturbation is normal, healthy behavior in equids—and perhaps even necessary for healthy sexual function. …Masturbation in horses, ponies, donkeys, zebras, etc., involves extension of the penis and rhythmic bouncing, pressing, or sliding of the erect penis against the belly. Some stallions might even include pelvic thrusts. Although the penis enlarges as in copulation, and some pre-sperm fluid might drip from the urethra, masturbation rarely results in ejaculation. …'During the past decade, spontaneous erection and masturbation has been found to be normal, natural behavior not only in equids, but in all mammalian species, including man,' McDonnell said. 'In horses, however, masturbation is often mistaken as a vice by horse owners, trainers, and veterinarians.'…masturbation is not an aberrant behavior like vices such as pacing, weaving, cribbing, or digging, although many horse owners seem to think so. With other vices, horses often exhibit anxious behavior, whereas stallions appear calm and relaxed while masturbating. In her studies, she found that even wild horses and zebras, which roam freely, would masturbate on a regular basis. 'We have observed: zebras in the wild, zebras in zoos. Donkeys in the wild. Horses in stalls, horses in pastures. Animals for breeding, animals which are not bred. Stallions which can see females, and stallions which cannot. Bachelor stallions, and harem stallions out in the wild. And they all masturbate about every 90 minutes,' McDonnell said. 'In fact, wild horses are much more regular, probably because they are not affected by all the distractions of captivity.'」
　　[　https://ia802906.us.archive.org/0/items/largeanimalinternalmedicine/16-%20Understanding%20Horse%20Behavior.pdf 2023-05-17　]　
　Without a doubt, the Irish also have knowledge of their own to pass along in these trying times:「Masturbation will not spread coronavirus, especially if you wash your hands (and any sex toys) with soap and water for at least 20 seconds before and after.」Nonetheless and regrettably, unlike in dynastic China, it must be undertaken alone to truly be a preventative countermeasure but still achieve the desired result with some degree of safety.
　 　[　https://www.sexualwellbeing.ie/sexual-health/sex-and-coronavirus/ 2020-03-31　]　
　The Dutch, too have the same solution—it seems masturbation has become mainstream in the media the world over due to the coronavirus (it has always been 'the main stream' in reality, albeit covertly for most folks):
　「'Don't have sex with your partner if they have been isolated because of (suspected) coronavirus infection,' the RVIM says. 'Sex with yourself or with others at a distance is possible (think of telling erotic stories, masturbating together).'」
　　[　https://www.theguardian.com/world/2020/may/15/dutch-official-advice-to-single-people-find-a-sex-buddy-for-lockdown-coronavirus 2020-05-16　]　
　Needless to point out perhaps, but Chinese shamans from antiquity hit upon the same solution as a pandemic preventative countermeasure, honed for ultimate client satisfaction by utilizing naked females with no-longer-integrated feet as masturbatory sex buddies available for short-term rental with erotic visualization of live prepubescent female genitalia engaging in autoerotic stimulation herself, as a solution to the same problem facing us now, but in pre-Internet days.

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: to halt; to stay; to be stationed (of troops, diplomats etc)
Japanese: to remain, to abide, to stay, to be limited to, to be confined to, to stop, to come to a stop, to come to a halt, to cease, to be stopped, to be suspended, to alight, to perch on, to park
Unihan extended: to be stationed at, reside at; to stop
EDRDG: stop-over; reside in; resident