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The Chinese broadcasting industry is facing variety of booming new services since the Chinese DTTB (digital television terrestrial broadcasting) standard was finalized in August, 2006. Among all of these feasible applications, deploying TV services on the ongoing Chinese High Speed Railway is the one which has drawn much attention. However, due to the vast territory and the different landforms of China, there are many difficulties in deploying Chinese railway TV. In this paper we describe an ongoing railway TV system named ADTB-R in China. The application environment and technical difficulties are analyzed, followed by the detailed description of the whole system including the network. Moreover, the environment, equipments and data of the trial tests are also provided. Finally, we also give of vision of the future of railway TV.