One way is to take the bus to Muxidi North Bus Station 320 7 17 Special 6 689, take the subway 1 line to Jianguomen, and then take Line 2 to Beijing Railway Station.
Another way is to take the bus to Xizhimen through train 105 106 26, and take Metro Line 2 to Beijing Station.
I'm a student at Polytechnic University. Every time I go home, I tend to take the second route. . Simple and convenient