Beijing Long-Distance Bus

Hello. Why is not written about Tianqiao long-distance bus station. How to write it in Chinese for a taxi? Can I get to the station by subway or bus from the city center (subway Wangfujing station)?
And one more question. Where is Dongzhimen Bus Station (Bus number 936 to Mutianyu Great Wall)? What is exit subway station Dongzhimen?
Thank you.