渊源是这个

下面有个南韩人回帖，老外真是精辟，哈哈。。。

mrsnerd_prime: Makes me proud to be Korean.
frostypookie: I thought everything made Koreans proud to be Korean.
mrsnerd_prime Hahaha that about sums it up.

还有一些教材截图 1, 2, 3, 4

甚好甚强大。。。。。

via