There may be many places selling Longfeng Chengxiang cigarettes in Fengtai District, Beijing. The following are some sales outlets I know:

* * * Beijing Tobacco Distribution Center. * * Address: No.25 Dahongmen Road, Fengtai District, Beijing.

* * * Wumart hypermarket. * * Address: No.48 Sihezhuang, Fengtai District, Beijing.

* * * Tiankelong Supermarket. * * Address: No.0/5, Nanyuan Road, Fengtai District, Beijing.

Please note that this information may change with the change of time, place and other factors. I suggest you contact the relevant institutions or stores directly to obtain the latest and most accurate information.