hi i'm staying at Dongsi South Street, Dongcheng, Beijing, how can i reach the china great wall??

May I know which section of wall you are going to visit?
If it is Mutianyu, walk from where you are to Dengshi Dongkou Bus Stop to take bus no. 106 to get off at Dongzhimen. Then walk to Dongzhimen Transport Hub in Dongzhimen Waixiejie to take bus no. 867 to your destination directly.

If it is Badaling, you can walk to Dongsi Lukou East station to take bus no. 609 to Jishuitan Qiaonan Station, walk from which to Deshengmen to take bus no. 880 or 919 to your destination.

thanks,
may i ask how long did the journey take???
and what do you suggest to visit in beijing??

Geneally, the journey to either of the sections takes 1.5-2h.

In Beijing, aside from the Great Wall, the Tiananmen Square, Forbidden City, Summer Palace, Temple of Heaven, Silk Market and Wangfujing Pedestrian are good destinations.