You are in Tianjin
1. Go to the railway station and take the Harmony number-to Beijing South Railway Station-take subway line 4-to Xidan, change to line 1 and take the bus No.812 (Langjiayuan-Dachang Summer Resort) and cross Wal-Mart Road (downstairs of Beijing TV Station).
2. Walk from Dawang Road to Bawangfen and take 8 10 (Bawangfen-Metallurgy) and get off at North China Institute of Science and Technology. Baidu Maps