best route from Beijing dongsi subway station to the nieujie mosque

1. You can take subway line 5 to Ciqikou, then change to line 7 to Guanganmen Nei, then walk about 1000 yards to the mosque.
2. You can take subway line 5 to Ciqikou, then change to line 7 to Caishikou, then take bus 48 line or 13 special line to the mosque. This way you don't need to walk too much but a more transfer is needed.
You can choose the way you like~