「Surrounded from above, at home」with「the small, young meat」and the lower element is figuratively「being as lucky as the next person.」Referred to performing activities normally conducted in the dark of NIGHT. Perhaps another meaning of literally「getting lucky」with a kill and eating what was hunted, a「little meat」after returning home at dusk, in the EVENING, a NIGHT BIRD HUNTING BUNNIES, RATS. Archeologists have determined that early humans generally preferred hunting small furry relatively defenseless animals such as rabbits and rats rather than huge mammoths capable of stomping humans into greasy spots, and doing so was more practical anyway since it was more difficult to consume the entire mammoth prior to spoiling than it was to consume a bunny or two (and what could be done with all that rotting meat?). Granted that mammoths were hunted for the really big holiday gatherings, much like the Super Bowl or World Cup final parties of today. Rodents and lagomorphs, and insects as well were a major source of protein for early humans, and still are eaten today all over the world, in all sorts of cultures, as「food.」[　https://en.wikipedia.org/wiki/Rat 2013-09-08　]　
　Generally, based upon archeological finds of bones at dwelling sites, early humans sought small animals, rodents such as rats and rabbits, and not generally enormous mammoths as depicted in Hollywood movies, noodle commercials, and myths (and certainly none after the Clovis Culture extinction). Nobody wanted to suffer serious injury and waste time killing something that would soon spoil and was far beyond the capacity of a tribe to consume entirely, let alone carry back to the cave or other members of the tribe. In any case, humans generally hunted any animal with whiskers for food, something nearby and relatively small, not likely often anything larger than a horse. Neanderthals hunted mammoths, and coincidentally perhaps, both of those species have become extinct.

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: night
Japanese: evening, early night hours, night owl, nighthawk, late bird, to stay up late, to keep late hours
Unihan extended: night, evening, dark
EDRDG: wee hours; evening; early night