The reporter learned from the Binhai Construction and Investment Group on March 14 that the construction of the foundation pit of the Xinjiayuan North Station of the rail transit line B1 has been completed. The construction of the main plate and the roof of the main structure is underway. The construction of the main structure is expected to be completed in August. The line B1 is a fully underground north-south line with a total length of approximately 31.3 kilometers and 22 stations. Xinjiayuan North Station is the penultimate station on the north end of Line B1. It is located in Huanggang Wetland in Binhai New Area. The station is a two-story underground island station with a floor area of 15,628.7 square meters. After the completion of the main structure of Xinjiayuan North Station, the shield tunneling method will be used to achieve regional connection with the surrounding Xinjiayuan Station and form a communication channel.