There's another shortcut. You walk from Wei Qing Expressway to Qing Ji Expressway, transfer to Qingdao, and then get off at Nanquan Toll Station.
Then go along Nanquan to Jihongtan-Ma Shang-Hongdao. These three towns are all straight roads on the same route. Pay attention to the road signs and run well. This section of the road is only 2 1 km, which is at least 20 km less than taking the Shuangkou around Liuting overpass to Hongdao.