How do I get from Beijing Dongzhimen Subway Station to Ladies Street?

You need to walk eastwards for about 55 yards (50 meters) to Dongzhimen Terminal Bus Stop, and then take bus no.418 to East Yanshaqiao Bus Stop. Upon arrival, you need walk ahead for 295 yards (270 meters) along Liangmaqiao Road and turn left to Tianze Road for about 630 yards (580 meters). Then turn left for 110 yards (100 meters) to the destination.
Or just take a taxi from Dongzhimen Station directly. The cab fare is around CNY 20.