A grand launch ceremony of the dual-brand project is held on June 10 in Qingdao's Laoshan district. The first dual-brand project of Diaoyutai MGM Hospitality, Diaoyutai Hotel Qingdao and MGM Qingdao opened to the public in Qingdao's Laoshan district of Shandong province on June 10, creating a new landmark of high-end cultural tourism and injecting strong momentum into the development …