顾左右而言他

gù zuǒ yòu ér yán tā

(idiom) to digress from the topic of discussion

顾

gù

to look after; to take into consideration; to attend to

左

zuǒ

left

右

yòu

(bound form) right; right-hand side

而

ér

and

言

yán

words

他

tā

(third-person singular) (since the early 20th century, usu. male) he; him; his