Nanchang Metro Line 4 is the fourth completed and operational metro line in Nanchang, as well as the city’s third river-crossing metro line. Fully opened to traffic on December 26, 2021, it takes green as its representative color. The line runs from Baimashan Station to Yuweizhou Station, with a total length of 39.6 kilometers and 29 stations in total. It passes through seven major areas, namely Xinjian District, Wangcheng, Honggutan, Jiulonghu New Town, Nanchang County, Xihu District, Donghu District, Qingshanhu District and Nanchang High-tech Zone. Equipped with six-car Type B trains, the project involves a total investment of 28.65 billion yuan. It ranks as the longest line with the most stations and the largest investment within Nanchang Metro network.