Contracted by China Railway Construction Corporation Limited, the eastern expansion line of the T3 terminal of Huanghua International Airport in Changsha, Central China's Hunan Province, was dug through on May 6. It is the world's first double-line medium- and low-speed magnetic levitation tunnel excavated with the shield engineering method.

http://en.sasac.gov.cn/2023/05/22/c_15299.htm