Just as Liquor Turns a Face Red Gold Turns a Heart Black in Chinese / Japanese...

白酒紅人面黃金黑世心 literally says: [Just as] white liquor makes people's faces turn red, [So] yellow gold makes people's hearts turn black.

This is a warning about the nature of greed. The suggestion is that one who lusts for gold and riches will eventually have a black heart (or become a heartless greedy bastard). As a wall scroll, this is a reminder and warning to keep yourself from following the greedy path.