The Qu River flows roughly southeast for and is flanked on both sides by hills. Almost all the rivers of Quzhou feed into the Qiantang, which ultimately empties into Hangzhou Bay. The terrain is higher in the west and the east. The territory of Quzhou Municipality is made up of plains (15%), hills (36%), and mountains (49%). In the north is the Qianli Gang () mountain range and in the west the Yu Mountains (). The highest mountains, the range known as the Xianxia Ling (), lie in the south. The highest point in the city is at Dalong Gang (), which rises to 1,500 m above sea level. 70.7% of the land is covered with forest. The rest is densely irrigated and farmed, producing citrus fruits, tea and mulberry leaves. The north China plain is an important grain-producing areas is also the key area of nitrogen loss, Quzhou nitrogen loss in 2017 about 9000 tons, through effective to improve crops (wheat, corn, vegetables and animal (pig, eggs) in the production of reasonable management to further improve the Quzhou has been the development of the north China plain green agriculture. Climate Quzhou has a humid subtropical climate (Köppen Cfa) with four distinctive seasons, characterised by hot, humid summers and chilly, cloudy and drier winters (with occasional snow). The mean annual temperature is , with monthly daily averages ranging from in January to in July. The city receives an average annual rainfall of and is affected by the plum rains of the Asian monsoon in June, when average relative humidity also peaks. The frost-free period lasts 251–261 days. Winds along the Qiantang River valley are predominantly north-easterly and north-east-easterly. Occasionally typhoons blow in from the Pacific Ocean. With monthly percent possible sunshine ranging from 25% in March to 59% in August, the city receives 1,810 hours of bright sunshine annually. Tourism Ancestral Temple of the Southern Confucian Clan Lanke Mountain, southeast of the city proper. It features green peaks and clear waters, and the huge rocks on top of the mountain support a horizontal rock to form a natural arch, the Tiansheng Bridge ("Nature-Formed"). Demographics As of 2003, Quzhou municipality registered a population of 2,578,100. The vast majority are Han Chinese (99.16%) but there are also small minorities of She (0.73%) and Hui, Zhuang, Manchu and Miao (together making up 0.1%). Most of the people in Quzhou are engaged in agriculture