and hot humid summers. Annual precipitation averages between while the year round mean temperature is . Administrative divisions Huludao has six immediate sub-municipal divisions: Economy More than 40 mineral resources have been discovered in the Huludao region, including gold, zinc, molybdenum, lime and manganese. As a result, major pollution has been an ongoing issue for Huludao's local residents. West of the city center, the town of Yangjiazhangzi is an important global center for molybdenum mining. Huludao boasts a long coastline of 237 km, and the surrounding waters are rich in fish, shrimp and shellfish, with plentiful reserves of natural gas and oil. With a climate suitable for the cultivation of fruit trees, Suizhong county is home to the Qiansuo orchard, Asia's largest, which grows a wide variety of fruits including apples, pears, nectarines and jujubes. Huludao's economy is dominated by some of China's most important industrial enterprises, providing employment for a large proportion of the population. These include Asia's biggest zinc manufacturing operation, the Huludao Zinc Smelter, the Jinxi oil refinery and Jinhua chemical engineering, as well as Huludao's massive shipyard, the building site of China's nuclear submarines. The oilfield off the coast of Suizhong county produces 5 million tons of crude oil annually. Electricity generation is set to increase annual capacity to 3.6 million kilowatts. In the city itself are special development areas designed to attract foreign investment to the region, including the Huludao Economic Development Zone and the Huludao Hi-tech Development zone, which is the location for a Siemens turbomachinery plant. Transport Huludao is an important link in rail and road networks between Beijing and northern cities such as Shenyang and Harbin. The newly renovated North Station () serves high-speed passenger trains that cover the to Beijing in about three hours. Public transportation in the city is provided by over 25 bus services and innumerable taxis. Traditional cycle rickshaw and auto rickshaws were banned from the city in 2010 but can be seen in smaller cities and towns in the region. Long-distance buses and trains link the centers in the greater Huludao region. Tourism Huludao is endowed with scenic areas and sites of historical interest. It attracts many domestic tourists in summer with its picturesque sandy beaches, including Longwan Beach near the city center and Xingcheng Beach, a traditional resort known as the 'second Beidaihe'. The old town in Xingcheng is a beautifully preserved Ming Dynasty city, with