The MileâÂÂMengzi high-speed railway or Mimeng HSR () is a high-speed railway line in Honghe, Yunnan, China. It is operated by China Railway Kunming Group. It is the first high-speed railway line which runs entirely in an autonomous prefecture in mainland China (PRC).
Construction officially started on 30 May 2018. The railway opened on 16 December 2022.
The line splits from the NanningâÂÂKunming high-speed railway south of Mile railway station. It ends at Honghe railway station. It is approximately long and has a maximum speed of .
There are 5 stations on the railway: , , , and .