- 天长日久 tiānchángrìjiǔ over timeafter a long time; over a long period
- 日久岁深 rìjiǔsuìshēn over many yearsfor a long period of time; for a number of years
- 日久生情 rìjiǔshēngqíng growing fondnessfamiliarity breeds fondness; to develop feelings for someone after a long period of time
- 路遥知马力，日久见人心 lùyáozhīmǎlì, rìjiǔjiànrénxīn time reveals characterjust as distance determines the stamina of a horse, so does time reveal a person's true heart
