What's the origin of the Japanese people ?

[Grimmo]

Thank you for the reply, Minty.
I presume that you didn't have enough time to
go through all my posts, and jumpt through conclusion
and made comments, which are understandable.
Japanese gene stocks are, strictly speaking, from four major ethnicity:
1) Ainu and jomon, native islander
2) Yayoi: South west sibelian (including korean)
3) Yayoi: South east asian (including han chinese)
4) Polynesian:
(2) and (3) does make up approximately 50% of total japanese population, or could be even 60% given that this race is admixtured with (I) and (4).
So, if can generalize a bit,
(1)Ainu/jomon: 40%
(2)Chinese/Korea: 50%
(3)Polynesian: 10%
A few things I want to ask is:

Statistics show that 50% of Asian women are born with single eyelids.

-- where is the source of this?

The stereotypical southern Chinese:
•Has almond-shaped eyes
•Is shorter and has a smooth, round face (more than likely, no facial hair)

-- Interesting comment. Your description of southern han chinese could be more biased than my comment. Could you demonstrate your points by giving the examples? Guidelines are that it has to be a picture taken from 1800-1950 so that the lineages are much clearer than modern asian, who are more difficult to traced.

Most Chinese do not have double eye lids, the examples you picked just so happened to be a group who does.

-- My point is more or so that with a thick eye fold, double eyelids can be much easily formed, and does not necessarily mean that all chinese are double eye-lids. But northeastern asian's morphology generally supports the single eyelid theory. Quality of double eyelids on japanese and chinese are certainly different in these regards, if there is one speaking of on japanese at all.
Lastly, why chinese people likes to state that they are the same people as japanese? Don't they have a pride? In terms of Morphology and genetics, many japanese are remote to han chinese people, and lumping all together is misleading, because some japanese looks caucasoid or polynesian than chinese. If more than 40% of that race is not looking chinese, then the claim of identity in east asia does not hold.