sǎo dì
to sweep the floor
to reach rock bottom
to be at an all-time low
yán miàn sǎo dì
lit. for one's face to reach rock bottom
to be thoroughly discredited (idiom)
míng yù sǎo dì
to be thoroughly discredited
to fall into disrepute
wēi xìn sǎo dì
to lose every scrap of reputation