我对此从未听说过. 在国内时,一直在日本公司工作, 即使有此说法, 也会最后传到我们公司里.
在这里求教诸位, 英文解答更佳. 附上美国同事的网上摘抄, 供参考.
Did you know that in ancient mythology, the Chinese explained the origins of the Japanese this way - snow monkeys, as found in Japan, captured and carried away a Chinese princess. They raped her and the product was the Japanese people. So people of similar 'colour' can not only are racist, they can define the inferiority of the other race as being ape-like. Just because you happen to be ignorant doesn't make the issue less real.