The region was the cradle of various ancient civilizations , such as ancient China , old Korea , ancient Japan , and the Mongolian Empire . The region was the cradle of various ancient civilizations , such as ancient China , old Japan , ancient Korea , and the Mongolian Empire .
Wilayah ini merupakan buaian pelbagai tamadun purba, seperti China purba, Korea lama, Jepun purba, dan Empayar Mongolia. Wilayah ini merupakan buaian pelbagai tamadun purba, seperti China purba, Jepun lama, Korea purba, dan Empayar Mongolia.