All four Americans
It's an idiom, pronounced t ó UZH ū s ì y ì, which means to refer to the exile to remote areas. From Zuo Zhuan, the 18th year of Wengong.
explain
It's a metaphor for moving to remote areas.
source
In the 18th year of the Duke of Wen in Zuozhuan, it is said that "the four evil people, chaos, poverty, Taowu, Taotie, are devoted to the four ethnic groups in order to resist the evil spirit."
All four Americans
dedicate oneself to one 's country 's cause - yǐ shēng xǔ guó
when the dawn is breaking , and i cannot sleep - míng fā bù mèi
without regarding a thousand miles as very distant -- take though it were a thousand miles away - bù yuǎn qiān lǐ
things will develop in the opposite direction when they become extreme - wù jí bì fǎn