nananshiIntroduction：Nanan Introduction: Nan'an County is referred to as “Liu” in the middle reaches of Jinjiang in southern Fujian. It is connected to Wucheng District and Jinjiang City in the east, Jinmen Island across the sea in the southeast, Anxi County and Tong'an County in the west, and close to Yongchun County and Xianyou County in the north. The county has a circumference of 313 kilometers and a width of 45 kilometers from east to west. It is 82 kilometers long from north to south and 2032.5 square kilometers. The mountains are undulating, and river valleys and basins are interspersed. The terrain is high in the northwest and low in the southeast. The hilly areas below 1000 meters above sea level account for 73% of the county. The mountain can be roughly divided into three parts, the Yunding Mountain Range in the southwest of the county, the Yangping Mountain Range in the northeast, and the Tianzhu Mountain Range in the northwest. Jinjiang is the largest river in the county (the ancient name is Nan'an River). Its total flow is twelve, and the rivers criss-cross and divide the territory into five alpine basins (commonly known as “five small baboons”, namely Xiangyang, Penghua, Xiangyun, Meishan, Feng Nest), three river valley plains (commonly known as "three big 堀", namely Yingdu, Luoxi, Shishan). The county has a subtropical maritime monsoon climate. There are mountains in the northwest to block the cold wind, and the southeast has sea breeze regulation. Warm and humid climate is a distinctive feature of the climate. The four seasons are distinct, the annual average temperature is 20.9 °C, the average temperature in January is 12.1 °C; the average temperature in July is 28.9 °C, the frost-free period is 349 days, the rainfall is abundant, and the annual rainfall is 1650 mm, mostly concentrated in spring and summer.