Azalea flowers are in full bloom at Dazhushan Mountain Scenic Area in Qingdao, Shandong province. The coastal city of Qingdao, Shandong province saw a tourism boom both in traveler numbers and tourism-related revenues during the just-concluded Qingming holiday, which ran from April 4 to 6. Data from online travel platform Ctrip shows that tourism bookings in Qingdao increased by 165 …