Residents catch a metro ride during trail operations for Hohhot Metro Line 1 in the capital city of North China’s Inner Mongolia autonomous region, on Dec 18. Line 1 is set to open at the end of December, marking the first metro line in the autonomous region. Construction work on the project began in 2016. [Photo/Xinhua]

The snazzy interior look of the metro trains for the Line 1 integrates grassland elements. Currently, preparation work for the launch of the metro line is underway -- including equipment inspections, emergency drills and staff training. [Photo/Xinhua]

The stunning interior of the new Sanjianfang Station [Photo/Xinhua]