Spring is usually very short in much of China.为什么用much of China 而不是many of China?

题目

Spring is usually very short in much of China.为什么用much of China 而不是many of China?
Spring is usually very short in much of China.
这句的翻译是：在中国许多地方春天通常很短.
而在语法书上的语法点是,many修饰或替代可数名词复数,而much修饰或替代不可数名词.
为什么用much of China 而不是many of China?
我的理解是这里的much应该是替代不可数名词.原句应该是in many parts/places of china,所以应该是用many替代many parts/places,为什么是 much呢?不解.求教各位老师了~

答案

根据我的理解;many 是指具体的,形象的,而much 是没有具体说明的,是大概的. 谢谢