Hi,Mr.nizam
It is a bit far from each other. It cost a lot to take taxi, so use public bus and subway. First take but 707 from Haiyijiudian to Guanghuaqiaonan and then hop on subway line 1 from Guomao to Xidan, the station where you should change to subway line 4 to Caishikou. Niujie Mosque is reached after 1 kilometers' walk.