Photo taken on Aug. 16, 2018 shows the interior of a train of the Guangzhou-Shenzhen-Hong Kong Express Rail Link (XRL), in Hong Kong, south China. The trial run of the Hong Kong Section of XRL has been completed on Thursday. The 26-km Hong Kong section of the XRL links up Hong Kong with the mega high-speed rail network of the Chinese mainland. (Xinhua/Lui Siu Wai)