You can go to the Ming Tombs from Qianmen Street in the following ways:
Drive: This is the most direct way. Starting from Qianmen Street, drive along the Beijing-Kaifeng Expressway (G45), pass through Daxing District, then enter Changping District, and finally reach the Ming Tombs. The whole journey takes about 1 hour.
Public transportation: Take Metro Line 5 to Tiantongyuan North Station, then transfer to bus H53, Express 919, Local 919, etc., and get off at Ming Tombs Scenic Area Station, and you will be there.
Regarding the underground part of the Ming Tombs, the underground part of the Ming Tombs is currently not open to the public. Visitors can only visit the tombs and related attractions above ground. If you want to know about the history and structure of the underground, you can follow the official news to see if there are any new opening plans.