因为口是心非所以不得善终
[yīn wéi kŏu shì xīn fēi suŏ yĭ bù dé shàn zhōng]
Literally translated as 'because one tells white lies thus won't have a happy ending'. The idea behind this saying is rooted in moral beliefs where dishonesty is punished and truthfulness is rewarded ultimately, serving as a reminder for honesty in actions and words in interpersonal communication and throughout life.