Xuande Nanzhang meets Shan Fuying, the hermit.

Xuande is Liu Bei's Nanzhang, which is a place name. Si Mahui met Liu Bei's recluse, Mr. Water Mirror. Fu Shan, Si Mahui is another name of Xu Shu Xinye, which is a place name. In Xinye County, Henan Province, Liu Bei knew Liu Bei as a shepherd at that time, which means that Xu Shu knew Liu Bei. Hehe, what a detailed question. Is there a problem?