I tend not to trust what China says. Of course, that's just me. :V
And when the oceans were solid = the Ice Age. It's also when man spread to the Americas, so probably they spread to Japan then as well.
Matched. And 10000 is man, not ichiman. In both Korean and Japanese.
3: sam
4: sa
6: yeoseos (fine, this one's different)
9. gu (I'm stretchin, but similiar to kyu)
1000: chun (again, different).