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In 2008, I had a meeting with businessmen from South Korea, they told me that until 100 years ago they had a Chinese letter, they now have their own. Also, the Koreans are a mixture of Chinese and Mongols. @slowwalker

ㅡkorean alphabet was made for 600 years ago

Okay, I say that until 100 years ago they had a Chinese letter, that's what I heard.

you are right in that point.
In north east asia, chinese letters were as same as Latin.
So I can read and write chinese letters.