言歸正傳
yán guī zhèng zhuàn
Meaning:
to return to the main topic (idiom);
back to business
to finish a digression and get back to the main subject
言（yán）：words, speech
歸（guī）：to return, to go back to
正傳（zhèng
zhuàn）：main
subject of long novel
…
