On November 5, the CRCHI TBM "Hero" was launched successfully in the Tianxiang Avenue Tunnel of Nanchang-Jiujiang High-speed Railway. The excavation diameter of "Hero" TBM reaches 14.8 meters, which is the largest diameter TBM successfully launched in China railway.

http://en.crchi.com/art/2023/11/5/art_40592_4698810.html