protests, and forced the temporary closure of the local Carrefour store. In 2010 one of the worst recorded oil-spills in China's history occurred in Dalian. The Dalian PX protest occurred on 14 August 2011. In June 2014, China's tenth state-level new area, the Dalian Jinpu New Area was officially established. On 5 August 2016, the Dalian huabiao incident occurred. A huabiao in the center of Xinghai Square was demolished, which was believed to be out of political reasons related to the downfall of Chinese politician Bo Xilai, who oversaw the construction of Xinghai Square and the central huabiao during his tenure as the mayor of Dalian. The site of the huabiao was later replaced with a musical fountain, the largest one in Northeast China. Geography One of the most heavily developed industrial areas of China, Dalian municipal area today consists of Dalian proper and the smaller Lüshunkou (formerly Lüshun city, known in Western and Russian historic references as Port Arthur), about farther along the Liaodong Peninsula. Historical references note that the Russian designed city of Dalniy (Alt. Dalney), on the south side of Dalian Bay was from Port Arthur/Lüshun (known today as Lüshunkou or literally, Lüshun Port). Dalian is located on Korea Bay north of the Yellow Sea and roughly in the middle of the Liaodong peninsula at its narrowest neck or isthmus. With a coastline of , it governs the majority of the Liaodong Peninsula and about 260 surrounding islands and reefs. It is seated at south-south-west of the Yalu River, and its harbor entrance forms a sub-bay known as Dalian Bay. Climate Dalian has a monsoon-influenced humid continental climate (Köppen Dwa), characterized by warm wet summers due to the East Asian monsoon, and cold, windy, dry winters that reflect the influence of the vast Siberian anticyclone. Except for winter, the city experiences a one-month seasonal lag due to its position on the Liaodong Peninsula. The monthly 24-hour average temperature ranges from in January to in August. Annual precipitation averages but is heavily concentrated in the summer months and can vary greatly from year to year. Due to the coastal location, the mean diurnal temperature variation annually is small, at . The monthly percent of possible sunshine ranges from 49% in July to 68% in September and October, with 2,740 hours of bright sunshine annually. The annual mean temperature is . Extremes since 1951 have ranged from on 4