Hi.... How to go to days inn forbidden city hotel from Beijing airport by subway???

Well, by MTR, you can take Airport Express Train to Dongzhimen Station, where you can transfer to local subway line 2 to Jianguomen. Then transfer to line 1 to Wangfujing MTR Station. Getting out of the station from exit C, you will easily walk to your hotel within around 600m.

thanks juana for your useful information