What's the fastest way from beijing capital airport to Dongsi station?

As I know, you can take the airport metro line to Dongzhimen Station, and transfer metro line 2 to Chaoyangmen Station. Afterwards, you can catch metro line 6 to Dongsi Station directly. This trip may take around 50 minutes.

In addition, you can take the airport shuttle bus Wangfujing Jinbao Street Line to Prime Hotel first. Upon arrival, you just need to walk about 300 meters ahead to Dongsi Metro Station. The whole trip may take around 1 hour.