Shaoenxian

Shao'enxian (绍恩线) is a future metro line in Xiongjing, Bai Empire. The proposed project will connect the two existing metro lines – Shaoxiangxian and Entianxian – through the government quarter. While the project has been approved in principle by the metro operator and the government, the alignment has not been finalised. The 2019 proposal remains under study.

Shaoxiangxian and Entianxian were announced and planned as one line in 1994. Due to the complex secret labyrinth underneath the quarter, and the Emperor's reluctance to allow a study underneath the quarter, the connection had to be suspended. Provisions were built at the ends of the two lines for the future connection.

The Entianxian was fully completed in 2001, and the Shaoxiangxian was completed in 2004. Since their completion, various proposals were created to eventually connect the lines. Even after numerous revisions to the plans, no plan has been finalised by the government and/or received royal assent. In 2021, the government approved a 2.4 km one-station extension of Entianxian to Zhengyi, with other parts of the 2019 proposal being studied.