The way to take the subway to Yiyou Department Store is:

According to Baidu map, the subway route is: get on at Dongwang Station, take the subway line 3 (direction of Xisanzhuang) for 8 stops, transfer to the subway line 1 (direction of Xiwang) for 2 stops at Xinbai Square Station, get off at Heping Hospital Station (southwest exit of C), and walk 981 meters to Yiyou Department Store. The whole journey is 11.6 kilometers.