lù rén
passerby
passer-by
stranger
lù rén jiē zhī
understood by everyone (idiom); well known
a household name
Sī mǎ Zhāo zhī xīn lù rén suǒ zhī
Sima Zhao's stratagem is obvious to everyone
fig. an open secret
Sī mǎ Zhāo zhī xīn lù rén jiē zhī
lit. Sima Zhao's intentions are obvious to everyone (idiom)
fig. an open secret