The construction of the Chinese Eastern Railway and the foundation of Harbin determined the importance of this city in Russian-Chinese relations, which increased even more during the Civil War in Russia and after it. Various aspects of these relations can be analyzed using the example of the Harbin Hotel Modern. Its owners were the first to realize the idea of creating an entertainment and hotel complex, where the hotel and restaurant service was organically combined with the possibilities of cultural leisure and introducing the population to art. In the article "Modern" is presented as an example for studying the cultural and leisure aspects of the life of Harbin residents in the first half of the 20th century. Built on the initiative of Russian entrepreneurs, "Modern" has become a symbol of intercultural communication in a multinational city. Readiness for it, he broadcast the language of architecture, cooking, theater and cinema. The authors introduce the concept of the architectural language of the building itself, which is of great artistic value, give a brief description of the culinary language of "Modern", in which the traditions of Chinese cuisine were organically combined with European technologies, analyze the repertoire. European (Russian) and Chinese cultures met on the stage of "Modern", both amateur performers and outstanding artists performed, and important political negotiations took place. Two main periods of activity of "Modern" are considered: the first, 1906-1945, is more connected with Russian history, the second, from 1945 to the present day, represents the Chinese reality, but the Russianness characteristic of the past persists to this day. "Modern" and today plays an important role in the business and cultural life of China. The article is based on materials from Russian, Chinese and American archives and libraries, as well as on the results of the authors' field research.