Take subway line 3 and transfer to subway line 4. According to Baidu map, take subway line 3 from Nanjing Station and transfer to subway line 4, and you can reach Huadong Hotel in 30 minutes. Specific bus routes:

1. Take Metro Line 3 from Nanjing Station and arrive at Jiming Temple Station after 2 stops.

2. Arrive at Jiming Temple Station, walk about 90 meters, transfer to Metro Line 4, take Metro Line 4 and pass three stops.

3. Arrive at Caochangmen Station of South No.12 Division and walk about 870 meters to Huadong Hotel.