成语寓言：杞人忧天 Idiom and fable: Qi people worry about the sky falling
这则成语出自《列子，天瑞》，用来讽刺那些不必要的担心。
This idiom comes from "Liezi, Tian Rui", which is used to satirize those unnecessary worries.
Activity
这则成语出自《列子，天瑞》，用来讽刺那些不必要的担心。
This idiom comes from "Liezi, Tian Rui", which is used to satirize those unnecessary worries.