I HAVE A STAY IN QINGDAO FOR 13/14 hours , so prolly I wanna go outside

I have a flight from Shenyang to qingdao then to Delhi and I have a stay over there for almost 12 hours and I want to go outside and explore the city but I don’t know the places and where should I go first from the airport and also I want to know that if is there any metro railway available from the airport to the downtown and third is the place where I can go and visit