hi - what transportation i need to go to "ju yong guan" - china wall from Beijing?

I suggest you take train S2 at North Railway Station to Badaling first. Then take the free shuttle bus to Badaling bus stop. After that, transfer to bus no. 879 to the destination.

For return trip, you can take bus Chang 68 at the foot of the Wall to Shahe.Then take bus 345, 878, or 919 will all take you back to the downtown area.
You may also find more transportation information on this page. Enjoy your time on the Wall!