Qingdao (青岛; Qīngdǎo ; also known as Tsingtao), is regarded by some Chinese as one of the most beautiful and cleanest cities in China. With a population of around 3.5 million (8 million regional) it is one of the largest cities in Shandong Province. The name Qingdao means The Blue/Green Island. In 2011, the China Institute of City Competitiveness named Qingdao China's most livable city.