Correct

天南地北

/ tiān nán dì běi /
Strokes

Definition

distant places/all over the country/(to talk) about this and that

Example

Definition

far apart; poles apart

1
Tiānnánběi
天南地北
  
,
zài
fāng

be/live far apart

Definition

from different places/areas; all over the country

2
Lái
来自
tiānnánběi
天南地北

come from different parts of the country; come from all over the country

Definition

about a wide range of things; discursive; rambling

3
Liǎng
rén
tiānnánběi
天南地北
shuō
le
bàntiān
半天
  

The two of them talked about everything under the sun for a long time.