From Shichahai to Nanluoguxiang back to Dazhalan West, Xuanwu Dist.

For your first journey, it is only about 2km between the two places. If you wish to take a bus, bus no. 612, 623 and 118 can be taken at the Dongguanfang Station. And you need get off at Luoguxiang Station.
For the other journey, you can walk to Donghuang Chenggen Beikou Station to take bus no. 82 to East Tiananmen Staion. Then you can walk to your destination.