According to Baidu map, it takes 2 hours and 20 minutes to get from Weihai to Rongcheng by bus. The bus routes are as follows:

1. Walk 590 meters from Weihai to Gaowei Square North Station, take the bus line of Weihai Airport 1 (in the direction of Weihai International Airport) and get off at Weihai International Airport Station.

2. Take Rongcheng-Weihai Airport Line Station (Harbin Institute of Technology) at Weihai Airport Station and get off at the municipal government station, then walk 920 meters to the destination.