「Dog penis sliding and emerging shafts within orifice」「emerging shafts, diva with sliding head of wagging penis within all day (without emphasis)」sounds as if it describes the boring DAILY LIFE of a service provider.
　In the good ol' days, perhaps HEAVEN was「dragging off a prepubescent diva」or「emerging shafts with jerking, pulling, setting a reference point」from which to gauge「heaven」…but that glyph was supplanted by「penis thrusting downward to one side taut, and then taut to the other side, too (天).」Also refers to DAILY experiences, that is, those occurring every day for some humans, or multiple times for that matter, of emerging shafts with jerking, pulling and encompassing the TRUE NATURE of humans, the NATURAL tendency or inclination, suggesting that heaven is to be found right here on Earth, somewhere near each of us, perhaps even within his or her own groin as the divine experience. Not likely equating heaven with 'hauling plants' as some heathens have suggested, although eating some sorts of plants can be a fine experience in its own right.
　「Animal sexual behaviour takes many different forms, even within the same species. Researchers have observed monogamy, promiscuity, sex between species, sexual arousal from objects or places, sex apparently via duress or coercion, copulation with dead animals [necrophilia], homosexual, heterosexual and bisexual sexual behaviour, and situational sexual behaviour and a range of other practices among animals other than humans. Related studies have noted diversity in sexed bodies and gendered behaviour, such as intersex and transgender animals. The study of animal sexuality (and primate sexuality especially) is a rapidly developing field. It used to be believed that only humans and a handful of species performed sexual acts other than for procreation, and that animals' sexuality was instinctive and a simple response to the 'right' stimulation (sight, scent). Current understanding is that many species that were formerly believed monogamous have now been proven to be promiscuous or opportunistic in nature. A wide range of species appear both to masturbate and to use objects as tools to help them do so. In many species animals try to give and get sexual stimulation with others where procreation is not the aim. And homosexual behaviour has now been observed among 1,500 species and in 500 of those it is well documented.」
　　[　https://www.monkeyland.co.za/index.php?comp=article&op=view&id=588 2017-07-08　]　
　「You don't have to just lie on your back. Wilde recommends lifting your legs as high as possible (we're talking knees on your shoulders here) to help you reach the internal parts of your clitoris…. Now go forth and masturbate a lot! You're ready.」
　　[　https://www.cosmopolitan.com/sex-love/advice/a1602/solo-sex/ 2017-04-28　]　
　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)
Unihan extended: (ancient form of 天) the sky; the heaven, Nature; God, day