Getting there AND back from Juyongguan?

The first set of instructions to get there say:

"Take the Subway Line 13 and get off at Longze Station in Changping District, take the shuttle bus No.68 and you will get there."
Will the shuttle drop you off at the entrance? Can you simply ride it back to Longze Station on the way back? I've found out public transportation in Beijing is not entirely intuitive. Thanks in advance.