空麻袋背米

空麻袋背米

Literally means:

carry rice with an empty sack

Actually means:

gain benefit for nothing

It literally means filling one's empty sack with rice and carrying it back home without paying.

It figuratively means making profits by tricky means without investment. Derogatory.

把好带着空麻袋买米，钱不付就把装好的米背回家。

空麻袋背米，指不投入资金，靠玩弄手段赚钱。具有贬义色彩。