Useful, I negate the words of the previous one ha, our teacher said that we learn Korean completely do not have to worry about those domestic Korean people, because their language by the influence of the North Korean language, that is, the Korean language is not called the standard language and called "(dialect)" informal Korean, many foreign companies hire people will be the first to consider the Chinese students who study Korean language, Korean people do not have professional students to enjoy the favor. The Korean language is the most important language in the world, and it is the most important language in the world.