How can I get to the museum of genocide from the main bullet train station in Nanjing?

Memorial Hall to the Victims in the Nanjing Massacre is the correct name of this museum.
It is located at 418.Shuiximen Street.
If you arrive at Nanjing Railway Station, you can take the subway line 1 to Xinjiekou Station. Then you can take line 2 to stop at Yunjinlu Station. After that you can walk to the museum.
If you arrive at South Railway Station, you can take the subway line 1 from Zhonghuamen Station (near the South Station) to stop at Xinjiekou Station and then change line 2 to stop at Yunjiulu Station.