how do i get cheap bus or taxi from TAO (Qingdao Airport) to huangdao ,changjiang middle road

its midnight flight.11.30 pm onwards.

The Huangdao Special shuttle bus can take you from the airport to Marina Gold Hotel, which is within walking distance to your destination. However, the last bus leaves at 23:30, so you may miss that! Once you miss that, you have no choice but to stay at the airport overnight or take a taci to your destination.