83% is also mountainous. Several of the major tributaries of the Gan River, Ganzhou's namesake, join at a confluence in the center of the city. Bordering prefecture-level cities are: Fujian: Sanmingeast Longyaneast Guangdong: Meizhousouth Heyuansouth Shaoguansouth Hunan: Chenzhouwest Jiangxi: Ji'annorth Fuzhounorth Climate Ganzhou has a humid subtropical climate (Köppen Cfa) affected by the East Asian monsoon, with long, humid, very hot summers and cool and drier winters with occasional cold snaps. The monthly 24-hour average temperature ranges from in January to in July, with an annual average of . The average annual precipitation is around . With monthly percent possible sunshine ranging from 20% in March to 62% in July, the city receives 1,778 hours of bright sunshine annually. Winter begins somewhat sunny and dry but becomes progressively wetter and cloudier; spring begins especially gloomy, and from March to June each of the months averages more than of rainfall. After the heavy rains subside in June, summer is especially sunny. Autumn is warm and relatively dry. Demographics Its population was 8,970,014 at the 2020 Chinese census whom 2,588,060 in the built-up (or metro) area made of Zhanggong, Nankang, and Ganxian Districts. Vital statistics As of 2019, Ganzhou's birth rate is 12.96 per 1,000. Ethnic groups More than 99% of the city's population is Han Chinese. The city's ethnic minorities total 71,200 people, in 41 different ethnic groups. The largest minority populations in the city are the She, Hui and Yao. Ganzhou also contains the largest Hakka community in Jiangxi. Economy As of 2021, Ganzhou's gross domestic product (GDP) totaled ¥416.9 billion, an 9.5% increase from the previous year. Of this, ¥37.632 billion (10.83%) came from the city's primary sector, ¥136.819 billion (39.38%) came from the city's secondary sector, and ¥172.983 billion came (49.79%) from the city's tertiary sector. The city's GDP per capita totaled ¥35,341.74. As of 2019, the per capita disposable income of the Ganzhou's urban residents totaled ¥34,826, and the per capita disposable income of the Ganzhou's rural residents totaled ¥11,941. In 2011, Ganzhou's gross domestic product totaled ¥133.598 billion. Tourism Ganzhou is known as the "Orange Capital of the World" as well as the "Tungsten Capital of the World". The world's largest mechanical clock is located in Ganzhou called the Harmony Clock Tower, which was manufactured by UK-based clockmakers Smith of Derby Group. Though encircled by mountain scenery, other notable attractions in Jiangxi are Jingdezhen, Nanchang and