I've been in Japan many times and they do look at your chest while talking to you and they point to their nose to refer to themselves. The funny thing is that my boss (female) will talk to them and they will respond to me instead of her. Another thing that is weird is that they wait until you are almost at the door to say goodbye, it always seems like they are telling you that you forgot something.
The whole I'm exposing my neck to you is a bit obsolete, it's not like we carry swords anymore.
I'm not familiar with China at all, but since most of the Japanese culture comes from mainland China I would think it's at least similar at least on the old traditions.
I do like Japan a lot, it remind me of Spain, where it wouldn't be unusual to see people drinking beer at breakfast time. Tech guys work overtime and everyone punches timecards to get in and out. But unlike us, they do get paid for overtime, we are salaried. The bus stop like smoke break rooms within the building are weird. I mean they had designated smoke areas but it was all in the same nave.
Computer programmer workers will work in a common bench column, everyone looking busy regardless if they were working or not becuase at the end of that column will be a desk with their supervisor foreseeing them.
At the end of the row of supervisors you'll see another desk of the supervisor's supervisor looking at them, and at the end of that super-supervisor column the boss of them all will be watching.
Very industrial organization, 30 minutes lunch break, exercises at the desk, but this was over a decade ago, maybe things have changed now.
Cars abandoned on the side of the road because you can't drive them legally after a few years? (maybe 10 years but I don't recall)
No real nightlife unless you are in Tokyo in the Roppongi area, and forget about finding a taxi late at night unless you are in the nightclub district. Other cities would be totally quiet at night, not a single place open, or just a few bars opened, they did like that I could sing Spanish Karaoke though.
Edit: Although I hear they have a good Brazilian immigration influx, that might help lighten up a bit.
In any event none of this has to do with the Wung Hung Lo topic, sure probably Japan is a derivation of China's culture but it's not the same anymore by a long shot. Although by looking at the young Chinese tourists all around the world, it seems they are getting to Japan's level quick!