bù dàng yī huí shì
not regard as a matter (of any importance)
shuō shì yī huí shì , zuò yòu shì lìng wài yī huí shì
Saying is one thing, doing quite another (idiom)
shuō shì yī huí shì , ér zuò yòu shì lìng wài yī huí shì
see 說是一回事,做又是另外一回事|说是一回事,做又是另外一回事[shūo shì yī húi shì , zùo yòu shì lìng wài yī húi shì]