转脸

zhuǎnliǎn

转脸 — zhuǎnliǎn

1. to turn one's face; (figurative) to change one's attitude toward someone; (adv) in no time; in the twinkling of an eye

   他一转脸，就不理我了。 tā yī zhuǎnliǎn jiù bùlǐ wǒ le — He turned away and ignored me in an instant.