In three decades since 1978 when the Chinese economic reform started, China has accomplished remarkable growth across politics, economy, society and culture. In particular, after the financial crisis in the US in 2008, the nation has positioned itself as one of "G2", the most powerful nations in the world. To grow up as a superpower equal to, or even transcending the US, however, China also recognizes that it should, at some point, overcome domestic and international problems that have been hidden behind the country`s economic achievements. Internally, with an aim to overcome such challenges as economic gaps between Han Chinese and ethnic minorities, increased inequality and weakened socialism ideology, China is endeavoring to ensure the unity among multiracial groups and assimilate all the minorities under the banner of "United China" by establishing the theory of the "united multiracial nation" and the value of patriotism among next generations through history education. Outwardly, China is intending to have such efforts serve as moral drive toward its goal of being a political, economic and cultural superpower. Of potential problems that such efforts would result in, one is that in China`s history textbooks the history of the Korea-China relationship will be reinterpreted within the frame of its "united multiracial nation" theory. This would lead to a recognition that Balhae, one of two countries in the North and South States Period in the Korean Peninsula that is the beginning point of the external relationship between Korea and China, was a local government in the remote area of China, which in turn may result in a unconscious misunderstanding that the territory of Balhae, which was situated in the Northwestern area of the Korean Peninsula, was part of the ancient Chinese land. In addition, as China`s "united multiracial nation" theory incorporates the histories of northern aliens such as the Liao, Western Xia, Jin and Yuan Dynasties into its own history, countries situated in the Korean Peninsula in ancient to modern ages would be recognized as mere marginal states that shared political, economic and cultural spaces with China, like many other ethnic minorities surrounding China. Furthermore, the history of trades between Korea and China is defined within the system of "tributary trade" and the Goryo and Joseon Dynasties are merged with the history of ethnic minorities, whose authority was proclaimed and recognized by China. This would result in an involuntary situation where Goryo and Joseon, which were states situated in the Korean Peninsula, are reinterpreted within the frame of China`s united multiracial nation theory. China`s self-centered reinterpretation of history would desecrate the history, people and even independence of Korea and may lead to controversial issues on history as critical as China`s Northeast Project.