Recently, the reporter walked into the construction of Beijing city sub-central station. The station has a total construction area of about 3 million square meters and an underground construction scale of about 1.28 million square meters. It is the largest underground integrated transportation hub in Asia and is expected to be put into use within this year. At that time, starting from the sub-center of the city, the railway can quickly reach Tangshan City, Hebei Province, Baodi District, Tianjin City, Beichen District, Tianjin City and other places, helping the integration of Beijing-Tianjin-Hebei to a new level. At present, the Beijing sub-central section of the Beijing-Tangshan inter-city railway has carried out the operation test according to the map. The Beijing City Sub-Central Station is expected to be put into operation simultaneously with the completion of the Beijing-Tangshan Intercity Railway within the year. (Source: China News Network)