Why can't Suzhou weather represent the national weather?

Because our country is vast, the weather in one city can't replace the weather in the whole country.

Because the weather in Suzhou can only radiate the weather near Suzhou, the country will divide meteorological geographical areas.

Suzhou is located in the middle of the Yangtze River Delta, bordering Shanghai in the east, Zhejiang in the south, Taihu Lake in the west and the Yangtze River in the north, with a coastline of 157.96 km. The Beijing-Hangzhou Grand Canal runs through the north and south, and the Shanghai-Nanjing intercity railway, the Beijing-Shanghai high-speed railway and the Shanghai-Nanjing high-speed railway run through the east and west.