noun
all of China; the whole of China
Historical and literary term referring to the entirety of China, often used in pre-modern contexts or poetic descriptions. Not used in modern everyday conversation.
四百余州を治める王朝。
A dynasty that ruled all of China.
詩の中で「四百余州」と詠まれている
It is recited as 'shihyakuyoshū' in the poem.