1a. I am very aware of it, 1b. though some Americans don't seem to be.
2. .. the Chinese round apparently appeared in 1907, at least according to one source. It was also pretty much based on the 8x57 Mauser cartridge necked down, not the .30-06 case as was the Winchester round.
ad 1a. I know you are reliable. You must be of good cultural origin (I guess a Viking)
ad 1b. very mildly put
ad 2. There was several early versions of the Chinese round, one with 57 mm case, one with 60 mm and one with 65 mm (which might have led to the latter .270 Win.)
