The ancients Xuande left Xudu.

Is it an allusion? From Historical Records of the Three Kingdoms Wei Shuwu.

"Take four years, want to cross from Xiapi North, and send Liu Bei and Zhu Ling to take it. "

It means that Liu Bei's excuse to crusade against Yuan Shu is generous and careless.

He escaped from Cao Cao's lair, the wolf's den, and escaped from the jaws of Xu County.

It should be a good sign that two people upstairs canceled their visas.