山南海北

shānnán-hǎiběi

(1) [all over the land; far and wide as south of the mountains and norths of the seas]∶指遥远的地方

山南海北, 到处都有勘探队员的足迹

(2) [talk about this and that]∶比喻说话乱扯一气, 没有个中心

两人山南海北谈了半天