It's very cold in winter of jiangsu.找出错误

It's very cold in winter of jiangsu.找出错误
It's very cold in winter of jiangsu.找出错误

It's very cold in winter of jiangsu.找出错误
It's very cold in winter of jiangsu改成
It's very cold in winter in jiangsu

It's very cold in winter in Jiangsu.

Winter is very cold in Jiangsu.
这样说才正常。
It's very cold in winter in jiangsu.这句话本身没有语法错误，但老外听了会觉得很别扭