travel by night is toilsome
As a Chinese idiom, the Pinyin is Xi ā og à NJI ā ol á o, which means to be diligent in politics. It comes from the biography of Zhang Mao in the history of Ming Dynasty.
The origin of Idioms
"Zhang maozhuan in the history of the Ming Dynasty:" now your majesty is working hard at night, and the Empresses of the two palaces are worried about the world. "
travel by night is toilsome
closely reasoned and well argued - tóu tóu shì dào
clear breeze and bright principles - qīng fēng gāo jié