Why does the weather forecast in Fujian say that Chongwu is south by north?

Chongwu is the midpoint of Fujian and the dividing point between the South China Sea and the East China Sea. So our climate is unstable and the temperature difference between north and south is large. Therefore, a diagonal corner of the international beacon tower of Chongwu Ancient City is the dividing line of China's north-south climate forecast, and the north is Chongwu thought. The south is the south of Chongwu.