It's not easy for a person from East Asian to learn a western language, maybe a French/Spanish/Italian man can learn English very fast, because their mother language belong to Western European series. But it's also not easy for Chinese/Korean/Japanese people to learn each other's language. I know that Chinese and Korean players do not spend much time at school so their language capability is poor. But for people from Singapore/Hong Kong/Malaysia (with multiculture environment), English is much more used in their life, so the players can speak English more or less.