勤俭

Diligence and thrift made him a possessor of warm fortunes.

勤俭使他为富翁。

The principle of diligence and frugality applies to all undertakings.

勤俭节约适用于一切事业。

She keeps house industriously and frugally and niggles over every detail of each bill.

她勤俭持家对每张账单每一项目都细核查。