Koreans are very sophisticated when trading bitcoin and 5th of all bitcoin trades are happening in South Korean and this is also causing volatility of the currency. There are some doing arbitrage buying bitcoin in the US and selling in South Korea with a 40% profit called a Kimchi premium and the Korean government is also implementing new regulation as well taxing bitcoin and requiring identification for bitcoin wallets to prevent under aged kids from opening there own accounts.
More articles on Kimchi Premium