From Guo Mao to Tianyang Square in Yanjiao, you can take the bus according to the following routes:

1. It takes about 8 minutes to walk from Guo Mao subway station to Langjiayuan bus station.

2. Take bus No.8 18 at Langjiayuan bus stop and walk towards Tianyangcheng main station.

3. Take the 8 18 bus, pass the 1 1 station, and arrive at the bus stop of Yanjiao Chinese and American Hospital in about 46 minutes.

4. Walk to Yanjiao Sino-American Hospital, then take a bus from Yanjiao to Langfang and get off at Dabeiyao West Station.

5. Walk to Dabeiyao West Station, take Beijing 938 Road [West Section] bus, pass 43 stops and arrive at Anping Daokou Station.

6. Finally, walk to Tianyang Electric.

The total travel time is about 1 hour 14 minutes, and the whole journey is 34 kilometers. Please note that the specific routes and stops may be adjusted according to the actual situation. It is recommended to check the latest bus route information or use navigation software before going out.