How much does it cost for two people to go from Tianjin to Qingdao, Shandong for 4 days?

I am from Tianjin, too. I just got back from Qingdao and didn't spend much money. Many places don't need tickets. I went to Laoshan Mountain, but I didn't buy a ticket because some classmates I knew were here and took us from the back hill. The scenery at the top of the mountain is very good. Tickets 120 yuan. I spent three days and stayed for four days, and all the expenses were on accommodation, meals and round-trip fares.